From b78d5d76de6342c9edf540d491ace26310efc2b3 Mon Sep 17 00:00:00 2001 From: Tom Thornton Date: Fri, 5 Dec 2025 18:59:39 -0300 Subject: [PATCH 1/4] VStream: Prevent buffering entire transactions (OOM risk), instead send chunks to client (#18849) Signed-off-by: twthorn --- .../vreplication/initial_data_test.go | 20 + go/test/endtoend/vreplication/vstream_test.go | 247 +++- go/vt/proto/vtgate/vtgate.pb.go | 138 ++- go/vt/proto/vtgate/vtgate_vtproto.pb.go | 28 + go/vt/vtgate/vstream_manager.go | 177 ++- go/vt/vtgate/vstream_manager_test.go | 1085 +++++++++++------ proto/vtgate.proto | 6 + 7 files changed, 1187 insertions(+), 514 deletions(-) diff --git a/go/test/endtoend/vreplication/initial_data_test.go b/go/test/endtoend/vreplication/initial_data_test.go index 23f699563e2..ec390038f02 100644 --- a/go/test/endtoend/vreplication/initial_data_test.go +++ b/go/test/endtoend/vreplication/initial_data_test.go @@ -20,8 +20,10 @@ import ( "fmt" "math/rand" "os" + "strings" "testing" + "vitess.io/vitess/go/mysql" "vitess.io/vitess/go/vt/log" ) @@ -43,6 +45,12 @@ func insertInitialData(t *testing.T) { `[[VARCHAR("Monoprice") VARCHAR("eléctronics")] [VARCHAR("newegg") VARCHAR("elec†ronics")]]`) insertJSONValues(t) + + insertLargeTransactionForChunkTesting(t, vtgateConn, defaultSourceKs+":0", 50000) + log.Infof("Inserted large transaction for chunking tests") + + execVtgateQuery(t, vtgateConn, defaultSourceKs, "delete from customer where cid >= 50000 and cid < 50100") + log.Infof("Cleaned up chunk testing rows from source keyspace") }) } @@ -140,3 +148,15 @@ func insertIntoBlobTable(t *testing.T) { execVtgateQuery(t, vtgateConn, "product:0", query) } } + +// insertLargeTransactionForChunkTesting inserts a transaction large enough to exceed the 1KB chunking threshold. +func insertLargeTransactionForChunkTesting(t *testing.T, vtgateConn *mysql.Conn, keyspace string, startID int) { + execVtgateQuery(t, vtgateConn, keyspace, "BEGIN") + for i := 0; i < 15; i++ { + largeData := strings.Repeat("x", 94) + fmt.Sprintf("_%05d", i) + query := fmt.Sprintf("INSERT INTO customer (cid, name) VALUES (%d, '%s')", + startID+i, largeData) + execVtgateQuery(t, vtgateConn, keyspace, query) + } + execVtgateQuery(t, vtgateConn, keyspace, "COMMIT") +} diff --git a/go/test/endtoend/vreplication/vstream_test.go b/go/test/endtoend/vreplication/vstream_test.go index f31d59490f2..1f83dd0925a 100644 --- a/go/test/endtoend/vreplication/vstream_test.go +++ b/go/test/endtoend/vreplication/vstream_test.go @@ -31,7 +31,7 @@ import ( "vitess.io/vitess/go/sets" "vitess.io/vitess/go/vt/log" - _ "vitess.io/vitess/go/vt/vtctl/grpcvtctlclient" + "vitess.io/vitess/go/vt/utils" _ "vitess.io/vitess/go/vt/vtgate/grpcvtgateconn" "vitess.io/vitess/go/vt/vtgate/vtgateconn" @@ -49,7 +49,7 @@ func TestVStreamWithTablesToSkipCopyFlag(t *testing.T) { defaultRdonly = 0 defaultCell := vc.Cells[vc.CellNames[0]] - vc.AddKeyspace(t, []*Cell{defaultCell}, "product", "0", initialProductVSchema, initialProductSchema, defaultReplicas, defaultRdonly, 100, nil) + vc.AddKeyspace(t, []*Cell{defaultCell}, defaultSourceKs, "0", initialProductVSchema, initialProductSchema, defaultReplicas, defaultRdonly, 100, nil) verifyClusterHealth(t, vc) ctx := context.Background() @@ -60,7 +60,7 @@ func TestVStreamWithTablesToSkipCopyFlag(t *testing.T) { defer vstreamConn.Close() vgtid := &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ - Keyspace: "product", + Keyspace: defaultSourceKs, Shard: "0", Gtid: "", }}} @@ -80,7 +80,8 @@ func TestVStreamWithTablesToSkipCopyFlag(t *testing.T) { }, } flags := &vtgatepb.VStreamFlags{ - TablesToCopy: []string{"product", "customer"}, + TablesToCopy: []string{"product", "customer"}, + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions } id := 0 vtgateConn := vc.GetVTGateConn(t) @@ -90,11 +91,13 @@ func TestVStreamWithTablesToSkipCopyFlag(t *testing.T) { // present in the filter before running the VStream. for range 10 { id++ - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into customer (cid, name) values (%d, 'customer%d')", id+100, id)) - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into product (pid, description) values (%d, 'description%d')", id+100, id)) - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into merchant (mname, category) values ('mname%d', 'category%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into customer (cid, name) values (%d, 'customer%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into product (pid, description) values (%d, 'description%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into merchant (mname, category) values ('mname%d', 'category%d')", id+100, id)) } + insertLargeTransactionForChunkTesting(t, vtgateConn, defaultSourceKs, 10000) + // Stream events from the VStream API reader, err := vstreamConn.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, filter, flags) require.NoError(t, err) @@ -151,15 +154,20 @@ func TestVStreamWithTablesToSkipCopyFlag(t *testing.T) { stopInserting.Store(false) var insertMu sync.Mutex go func() { + insertCount := 0 for { if stopInserting.Load() { return } insertMu.Lock() id++ - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into customer (cid, name) values (%d, 'customer%d')", id+100, id)) - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into product (pid, description) values (%d, 'description%d')", id+100, id)) - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into merchant (mname, category) values ('mname%d', 'category%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into customer (cid, name) values (%d, 'customer%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into product (pid, description) values (%d, 'description%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into merchant (mname, category) values ('mname%d', 'category%d')", id+100, id)) + insertCount++ + if insertCount%5 == 0 { + insertLargeTransactionForChunkTesting(t, vtgateConn, defaultSourceKs, 20000+insertCount*10) + } insertMu.Unlock() } }() @@ -169,9 +177,9 @@ func TestVStreamWithTablesToSkipCopyFlag(t *testing.T) { time.Sleep(10 * time.Second) // Give the vstream plenty of time to catchup done.Store(true) - qr1 := execVtgateQuery(t, vtgateConn, "product", "select count(*) from customer") - qr2 := execVtgateQuery(t, vtgateConn, "product", "select count(*) from product") - qr3 := execVtgateQuery(t, vtgateConn, "product", "select count(*) from merchant") + qr1 := execVtgateQuery(t, vtgateConn, defaultSourceKs, "select count(*) from customer") + qr2 := execVtgateQuery(t, vtgateConn, defaultSourceKs, "select count(*) from product") + qr3 := execVtgateQuery(t, vtgateConn, defaultSourceKs, "select count(*) from merchant") require.NotNil(t, qr1) require.NotNil(t, qr2) require.NotNil(t, qr3) @@ -213,7 +221,7 @@ func testVStreamWithFailover(t *testing.T, failover bool) { defaultRdonly = 0 defaultCell := vc.Cells[vc.CellNames[0]] - vc.AddKeyspace(t, []*Cell{defaultCell}, "product", "0", initialProductVSchema, initialProductSchema, defaultReplicas, defaultRdonly, 100, nil) + vc.AddKeyspace(t, []*Cell{defaultCell}, defaultSourceKs, "0", initialProductVSchema, initialProductSchema, defaultReplicas, defaultRdonly, 100, nil) verifyClusterHealth(t, vc) insertInitialData(t) vtgate := defaultCell.Vtgates[0] @@ -228,7 +236,7 @@ func testVStreamWithFailover(t *testing.T, failover bool) { defer vstreamConn.Close() vgtid := &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ - Keyspace: "product", + Keyspace: defaultSourceKs, Shard: "0", Gtid: "", }}} @@ -239,7 +247,10 @@ func testVStreamWithFailover(t *testing.T, failover bool) { Filter: "select * from customer", }}, } - flags := &vtgatepb.VStreamFlags{HeartbeatInterval: 3600} + flags := &vtgatepb.VStreamFlags{ + HeartbeatInterval: 3600, + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions + } done := atomic.Bool{} done.Store(false) @@ -254,13 +265,18 @@ func testVStreamWithFailover(t *testing.T, failover bool) { // first goroutine that keeps inserting rows into table being streamed until some time elapses after second PRS go func() { + insertCount := 0 for { if stopInserting.Load() { return } insertMu.Lock() id++ - execVtgateQuery(t, vtgateConn, "product", fmt.Sprintf("insert into customer (cid, name) values (%d, 'customer%d')", id+100, id)) + execVtgateQuery(t, vtgateConn, defaultSourceKs, fmt.Sprintf("insert into customer (cid, name) values (%d, 'customer%d')", id+100, id)) + insertCount++ + if insertCount%3 == 0 { + insertLargeTransactionForChunkTesting(t, vtgateConn, defaultSourceKs, 40000+insertCount*10) + } insertMu.Unlock() } }() @@ -305,7 +321,7 @@ func testVStreamWithFailover(t *testing.T, failover bool) { case 1: if failover { insertMu.Lock() - output, err := vc.VtctlClient.ExecuteCommandWithOutput("PlannedReparentShard", "--", "--keyspace_shard=product/0", "--new_primary=zone1-101") + output, err := vc.VtctldClient.ExecuteCommandWithOutput("PlannedReparentShard", defaultSourceKs+"/0", "--new-primary=zone1-101") insertMu.Unlock() log.Infof("output of first PRS is %s", output) require.NoError(t, err) @@ -313,7 +329,7 @@ func testVStreamWithFailover(t *testing.T, failover bool) { case 2: if failover { insertMu.Lock() - output, err := vc.VtctlClient.ExecuteCommandWithOutput("PlannedReparentShard", "--", "--keyspace_shard=product/0", "--new_primary=zone1-100") + output, err := vc.VtctldClient.ExecuteCommandWithOutput("PlannedReparentShard", defaultSourceKs+"/0", "--new-primary=zone1-100") insertMu.Unlock() log.Infof("output of second PRS is %s", output) require.NoError(t, err) @@ -329,7 +345,7 @@ func testVStreamWithFailover(t *testing.T, failover bool) { } } - qr := execVtgateQuery(t, vtgateConn, "product", "select count(*) from customer") + qr := execVtgateQuery(t, vtgateConn, defaultSourceKs, "select count(*) from customer") require.NotNil(t, qr) // total number of row events found by the VStream API should match the rows inserted insertedRows, err := qr.Rows[0][0].ToCastInt64() @@ -384,7 +400,7 @@ func insertRow(keyspace, table string, id int) { if vtgateConn == nil { return } - vtgateConn.ExecuteFetch(fmt.Sprintf("use %s;", keyspace), 1000, false) + vtgateConn.ExecuteFetch("use "+keyspace, 1000, false) vtgateConn.ExecuteFetch("begin", 1000, false) _, err := vtgateConn.ExecuteFetch(fmt.Sprintf("insert into %s (name) values ('%s%d')", table, table, id), 1000, false) if err != nil { @@ -441,7 +457,11 @@ func testVStreamStopOnReshardFlag(t *testing.T, stopOnReshard bool, baseTabletID Filter: "select * from customer", }}, } - flags := &vtgatepb.VStreamFlags{HeartbeatInterval: 3600, StopOnReshard: stopOnReshard} + flags := &vtgatepb.VStreamFlags{ + HeartbeatInterval: 3600, + StopOnReshard: stopOnReshard, + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions + } done := false id := 1000 @@ -581,7 +601,9 @@ func testVStreamCopyMultiKeyspaceReshard(t *testing.T, baseTabletID int) numEven Match: "/customer.*/", }}, } - flags := &vtgatepb.VStreamFlags{} + flags := &vtgatepb.VStreamFlags{ + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions + } done := false id := 1000 @@ -654,7 +676,7 @@ func testVStreamCopyMultiKeyspaceReshard(t *testing.T, baseTabletID int) numEven tickCount++ switch tickCount { case 1: - reshard(t, "sharded", "customer", "vstreamCopyMultiKeyspaceReshard", "-80,80-", "-40,40-", baseTabletID+400, nil, nil, nil, nil, defaultCellName, 1) + reshard(t, "sharded", defaultTargetKs, "vstreamCopyMultiKeyspaceReshard", "-80,80-", "-40,40-", baseTabletID+400, nil, nil, nil, nil, defaultCellName, 1) reshardDone = true case 60: done = true @@ -708,7 +730,7 @@ func TestMultiVStreamsKeyspaceReshard(t *testing.T) { require.NoError(t, err) // Add the new shards. - err = vc.AddShards(t, []*Cell{defaultCell}, keyspace, newShards, defaultReplicas, defaultRdonly, baseTabletID+2000, targetKsOpts) + err = vc.AddShards(t, []*Cell{defaultCell}, keyspace, newShards, defaultReplicas, defaultRdonly, baseTabletID+2000, defaultTargetKsOpts) require.NoError(t, err) vtgateConn := getConnection(t, vc.ClusterConfig.hostname, vc.ClusterConfig.vtgateMySQLPort) @@ -765,6 +787,7 @@ func TestMultiVStreamsKeyspaceReshard(t *testing.T) { } flags := &vtgatepb.VStreamFlags{ IncludeReshardJournalEvents: true, + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions } journalEvents := 0 @@ -772,7 +795,6 @@ func TestMultiVStreamsKeyspaceReshard(t *testing.T) { var newVGTID *binlogdatapb.VGtid func() { reader, err := vstreamConn.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, filter, flags) - require.NoError(t, err) for { evs, err := reader.Recv() @@ -789,7 +811,7 @@ func TestMultiVStreamsKeyspaceReshard(t *testing.T) { case "0": // We expect some for the sequence backing table, but don't care. default: - require.FailNow(t, fmt.Sprintf("received event for unexpected shard: %s", shard)) + require.FailNow(t, "received event for unexpected shard: "+shard) } case binlogdatapb.VEventType_VGTID: newVGTID = ev.GetVgtid() @@ -821,13 +843,14 @@ func TestMultiVStreamsKeyspaceReshard(t *testing.T) { // Confirm that we have shard GTIDs for the global shard and the old/original shards. require.Len(t, newVGTID.GetShardGtids(), 3) + waitForWorkflowState(t, vc, fmt.Sprintf("%s.%s", ks, wf), binlogdatapb.VReplicationWorkflowState_Running.String()) + // Switch the traffic to the new shards. reshardAction(t, "SwitchTraffic", wf, ks, oldShards, newShards, defaultCellName, tabletType) // Now start a new VStream from our previous VGTID which only has the old/original shards. func() { reader, err := vstreamConn.VStream(ctx, topodatapb.TabletType_PRIMARY, newVGTID, filter, flags) - require.NoError(t, err) for { evs, err := reader.Recv() @@ -846,7 +869,7 @@ func TestMultiVStreamsKeyspaceReshard(t *testing.T) { case "0": // Again, we expect some for the sequence backing table, but don't care. default: - require.FailNow(t, fmt.Sprintf("received event for unexpected shard: %s", shard)) + require.FailNow(t, "received event for unexpected shard: "+shard) } case binlogdatapb.VEventType_JOURNAL: require.True(t, ev.Journal.MigrationType == binlogdatapb.MigrationType_SHARDS) @@ -904,7 +927,7 @@ func TestMultiVStreamsKeyspaceStopOnReshard(t *testing.T) { require.NoError(t, err) // Add the new shards. - err = vc.AddShards(t, []*Cell{defaultCell}, keyspace, newShards, defaultReplicas, defaultRdonly, baseTabletID+2000, targetKsOpts) + err = vc.AddShards(t, []*Cell{defaultCell}, keyspace, newShards, defaultReplicas, defaultRdonly, baseTabletID+2000, defaultTargetKsOpts) require.NoError(t, err) vtgateConn := getConnection(t, vc.ClusterConfig.hostname, vc.ClusterConfig.vtgateMySQLPort) @@ -962,7 +985,8 @@ func TestMultiVStreamsKeyspaceStopOnReshard(t *testing.T) { }}, } flags := &vtgatepb.VStreamFlags{ - StopOnReshard: true, + StopOnReshard: true, + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions } // Stream events but stop once we have a VGTID with positions for the old/original shards. @@ -983,7 +1007,7 @@ func TestMultiVStreamsKeyspaceStopOnReshard(t *testing.T) { case "-80", "80-": oldShardRowEvents++ default: - require.FailNow(t, fmt.Sprintf("received event for unexpected shard: %s", shard)) + require.FailNow(t, "received event for unexpected shard: "+shard) } case binlogdatapb.VEventType_VGTID: newVGTID = ev.GetVgtid() @@ -1040,7 +1064,7 @@ func TestMultiVStreamsKeyspaceStopOnReshard(t *testing.T) { switch shard { case "-80", "80-": default: - require.FailNow(t, fmt.Sprintf("received event for unexpected shard: %s", shard)) + require.FailNow(t, "received event for unexpected shard: "+shard) } case binlogdatapb.VEventType_JOURNAL: t.Logf("Journal event: %+v", ev) @@ -1103,7 +1127,7 @@ func TestVStreamStopOnReshardFalse(t *testing.T) { func TestVStreamWithKeyspacesToWatch(t *testing.T) { extraVTGateArgs = append(extraVTGateArgs, []string{ - "--keyspaces_to_watch", "product", + utils.GetFlagVariantForTests("--keyspaces-to-watch"), defaultSourceKs, }...) testVStreamWithFailover(t, false) @@ -1142,7 +1166,7 @@ func doVStream(t *testing.T, vc *VitessCluster, flags *vtgatepb.VStreamFlags) (n done := false vgtid := &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ - Keyspace: "product", + Keyspace: defaultSourceKs, Shard: "0", Gtid: "", }}} @@ -1167,7 +1191,7 @@ func doVStream(t *testing.T, vc *VitessCluster, flags *vtgatepb.VStreamFlags) (n arr := strings.Split(rowEvent.TableName, ".") require.Equal(t, len(arr), 2) tableName := arr[1] - require.Equal(t, "product", rowEvent.Keyspace) + require.Equal(t, defaultSourceKs, rowEvent.Keyspace) require.Equal(t, "0", rowEvent.Shard) numRowEvents[tableName]++ @@ -1176,7 +1200,7 @@ func doVStream(t *testing.T, vc *VitessCluster, flags *vtgatepb.VStreamFlags) (n arr := strings.Split(fieldEvent.TableName, ".") require.Equal(t, len(arr), 2) tableName := arr[1] - require.Equal(t, "product", fieldEvent.Keyspace) + require.Equal(t, defaultSourceKs, fieldEvent.Keyspace) require.Equal(t, "0", fieldEvent.Shard) numFieldEvents[tableName]++ default: @@ -1198,9 +1222,9 @@ func doVStream(t *testing.T, vc *VitessCluster, flags *vtgatepb.VStreamFlags) (n func TestVStreamHeartbeats(t *testing.T) { // Enable continuous heartbeats. extraVTTabletArgs = append(extraVTTabletArgs, - "--heartbeat_enable", - "--heartbeat_interval", "1s", - "--heartbeat_on_demand_duration", "0", + utils.GetFlagVariantForTests("--heartbeat-enable"), + utils.GetFlagVariantForTests("--heartbeat-interval"), "1s", + utils.GetFlagVariantForTests("--heartbeat-on-demand-duration"), "0", ) setSidecarDBName("_vt") config := *mainClusterConfig @@ -1215,7 +1239,7 @@ func TestVStreamHeartbeats(t *testing.T) { defaultRdonly = 0 defaultCell := vc.Cells[vc.CellNames[0]] - vc.AddKeyspace(t, []*Cell{defaultCell}, "product", "0", initialProductVSchema, initialProductSchema, + vc.AddKeyspace(t, []*Cell{defaultCell}, defaultSourceKs, "0", initialProductVSchema, initialProductSchema, defaultReplicas, defaultRdonly, 100, nil) verifyClusterHealth(t, vc) insertInitialData(t) @@ -1233,6 +1257,7 @@ func TestVStreamHeartbeats(t *testing.T) { name: "With Keyspace Heartbeats On", flags: &vtgatepb.VStreamFlags{ StreamKeyspaceHeartbeats: true, + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions }, expectedHeartbeats: numExpectedHeartbeats, }, @@ -1256,3 +1281,143 @@ func TestVStreamHeartbeats(t *testing.T) { }) } } + +// TestVStreamPushdownFilters confirms that pushdown filters are applied correctly +// when they are specified in the VStream API via the rule.Filter. +// It also confirms that we use the proper collation for the VStream filter when +// using VARCHAR fields. +func TestVStreamPushdownFilters(t *testing.T) { + ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute) + defer cancel() + setSidecarDBName("_vt") + config := *mainClusterConfig + vc = NewVitessCluster(t, &clusterOptions{ + clusterConfig: &config, + }) + defer vc.TearDown() + require.NotNil(t, vc) + ks := defaultSourceKs + shard := "0" + defaultCell := vc.Cells[vc.CellNames[0]] + + _, err := vc.AddKeyspace(t, []*Cell{defaultCell}, ks, shard, initialProductVSchema, initialProductSchema, 0, 0, 100, nil) + require.NoError(t, err) + verifyClusterHealth(t, vc) + insertInitialData(t) + + vtgateConn := getConnection(t, vc.ClusterConfig.hostname, vc.ClusterConfig.vtgateMySQLPort) + defer vtgateConn.Close() + + // Make sure that we get at least one paul row event in the copy phase. + _, err = vtgateConn.ExecuteFetch(fmt.Sprintf("insert into %s.customer (name) values ('PAUĹ')", ks), 1, false) + require.NoError(t, err) + res, err := vtgateConn.ExecuteFetch(fmt.Sprintf("select count(*) from %s.customer where name = 'pauĺ'", ks), 1, false) + require.NoError(t, err) + require.Len(t, res.Rows, 1) + startingPauls, err := res.Rows[0][0].ToInt() + require.NoError(t, err) + + // Coordinate go-routines. + streamCtx, streamCancel := context.WithTimeout(context.Background(), 10*time.Second) + defer streamCancel() + done := make(chan struct{}) + + // First goroutine that keeps inserting rows into the table being streamed until the + // stream context is cancelled. + createdPauls := startingPauls + createdNonPauls := 0 + go func() { + id := 1 + for { + select { + case <-streamCtx.Done(): + // Give the VStream a little catch-up time before telling it to stop + // via the done channel. + time.Sleep(10 * time.Second) + close(done) + return + default: + if id%10 == 0 { + _, err := vtgateConn.ExecuteFetch(fmt.Sprintf("insert into %s.customer (name) values ('paÜl')", ks), 1, false) + require.NoError(t, err) + createdPauls++ + } else { + insertRow(ks, "customer", id) + createdNonPauls++ + } + time.Sleep(10 * time.Millisecond) + id++ + } + } + }() + + vgtid := &binlogdatapb.VGtid{ + ShardGtids: []*binlogdatapb.ShardGtid{{ + Keyspace: ks, + Shard: shard, + Gtid: "", + }}} + + filter := &binlogdatapb.Filter{ + Rules: []*binlogdatapb.Rule{{ + Match: "customer", + Filter: "select * from customer where name = 'påul'", + }}, + } + vstreamConn, err := vtgateconn.Dial(ctx, fmt.Sprintf("%s:%d", vc.ClusterConfig.hostname, vc.ClusterConfig.vtgateGrpcPort)) + require.NoError(t, err) + defer vstreamConn.Close() + + // So we should have at least one paul row event in the copy phase, and + // we should have many paul row events in the running phase. + copyPhaseRowEvents, runningPhaseRowEvents := runVStreamAndGetNumOfRowEvents(t, ctx, vstreamConn, vgtid, filter, done) + + require.NotZero(t, createdPauls) + require.NotZero(t, createdNonPauls) + require.Greater(t, createdNonPauls, createdPauls) + require.NotZero(t, copyPhaseRowEvents) + require.NotZero(t, runningPhaseRowEvents) + + t.Logf("Created pauls: %d, pauls copied: %d, pauls replicated: %d", createdPauls, copyPhaseRowEvents, runningPhaseRowEvents) + require.Equal(t, createdPauls, copyPhaseRowEvents+runningPhaseRowEvents) +} + +// runVStreamAndGetNumOfRowEvents runs VStream with the specified filter and +// returns number of copy phase and running phase row events. +func runVStreamAndGetNumOfRowEvents(t *testing.T, ctx context.Context, vstreamConn *vtgateconn.VTGateConn, + vgtid *binlogdatapb.VGtid, filter *binlogdatapb.Filter, done chan struct{}) (copyPhaseRowEvents int, runningPhaseRowEvents int) { + copyPhase := true + func() { + reader, err := vstreamConn.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, filter, &vtgatepb.VStreamFlags{ + TransactionChunkSize: 1024, // 1KB - test chunking for all transactions + }) + require.NoError(t, err) + for { + evs, err := reader.Recv() + + switch err { + case nil: + for _, ev := range evs { + switch ev.Type { + case binlogdatapb.VEventType_COPY_COMPLETED: + copyPhase = false + case binlogdatapb.VEventType_ROW: + if copyPhase { + copyPhaseRowEvents++ + } else { + runningPhaseRowEvents++ + } + } + } + default: + require.FailNow(t, fmt.Sprintf("VStream returned unexpected error: %v", err)) + } + select { + case <-done: + return + default: + } + } + }() + return +} diff --git a/go/vt/proto/vtgate/vtgate.pb.go b/go/vt/proto/vtgate/vtgate.pb.go index aee35b174b5..cda03b4f948 100644 --- a/go/vt/proto/vtgate/vtgate.pb.go +++ b/go/vt/proto/vtgate/vtgate.pb.go @@ -1091,6 +1091,12 @@ type VStreamFlags struct { TablesToCopy []string `protobuf:"bytes,9,rep,name=tables_to_copy,json=tablesToCopy,proto3" json:"tables_to_copy,omitempty"` // Exclude the keyspace from the table name that is sent to the vstream client ExcludeKeyspaceFromTableName bool `protobuf:"varint,10,opt,name=exclude_keyspace_from_table_name,json=excludeKeyspaceFromTableName,proto3" json:"exclude_keyspace_from_table_name,omitempty"` + // Transaction chunk threshold in bytes. When a transaction exceeds this size, + // VTGate will acquire a lock to ensure contiguous, non-interleaved delivery + // (BEGIN...ROW...COMMIT sent sequentially without mixing events from other shards). + // Events are still chunked to prevent OOM. Transactions smaller than this are sent + // without locking for better parallelism. + TransactionChunkSize int64 `protobuf:"varint,11,opt,name=transaction_chunk_size,json=transactionChunkSize,proto3" json:"transaction_chunk_size,omitempty"` } func (x *VStreamFlags) Reset() { @@ -1195,6 +1201,13 @@ func (x *VStreamFlags) GetExcludeKeyspaceFromTableName() bool { return false } +func (x *VStreamFlags) GetTransactionChunkSize() int64 { + if x != nil { + return x.TransactionChunkSize + } + return 0 +} + // VStreamRequest is the payload for VStream. type VStreamRequest struct { state protoimpl.MessageState @@ -1864,7 +1877,7 @@ var file_vtgate_proto_rawDesc = []byte{ 0x63, 0x61, 0x6c, 0x6c, 0x65, 0x72, 0x49, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x64, 0x74, 0x69, 0x64, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x64, 0x74, 0x69, 0x64, 0x22, 0x1c, 0x0a, 0x1a, 0x52, 0x65, 0x73, 0x6f, 0x6c, 0x76, 0x65, 0x54, 0x72, 0x61, 0x6e, 0x73, 0x61, 0x63, 0x74, 0x69, - 0x6f, 0x6e, 0x52, 0x65, 0x73, 0x70, 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a/go/vt/proto/vtgate/vtgate_vtproto.pb.go b/go/vt/proto/vtgate/vtgate_vtproto.pb.go index aada4550851..fe25f8bf9ef 100644 --- a/go/vt/proto/vtgate/vtgate_vtproto.pb.go +++ b/go/vt/proto/vtgate/vtgate_vtproto.pb.go @@ -361,6 +361,7 @@ func (m *VStreamFlags) CloneVT() *VStreamFlags { StreamKeyspaceHeartbeats: m.StreamKeyspaceHeartbeats, IncludeReshardJournalEvents: m.IncludeReshardJournalEvents, ExcludeKeyspaceFromTableName: m.ExcludeKeyspaceFromTableName, + TransactionChunkSize: m.TransactionChunkSize, } if rhs := m.TablesToCopy; rhs != nil { tmpContainer := make([]string, len(rhs)) @@ -1487,6 +1488,11 @@ func (m *VStreamFlags) MarshalToSizedBufferVT(dAtA []byte) (int, error) { i -= len(m.unknownFields) copy(dAtA[i:], m.unknownFields) } + if m.TransactionChunkSize != 0 { + i = encodeVarint(dAtA, i, uint64(m.TransactionChunkSize)) + i-- + dAtA[i] = 0x58 + } if m.ExcludeKeyspaceFromTableName { i-- if m.ExcludeKeyspaceFromTableName { @@ -2339,6 +2345,9 @@ func (m *VStreamFlags) SizeVT() (n int) { if m.ExcludeKeyspaceFromTableName { n += 2 } + if m.TransactionChunkSize != 0 { + n += 1 + sov(uint64(m.TransactionChunkSize)) + } n += len(m.unknownFields) return n } @@ -5376,6 +5385,25 @@ func (m *VStreamFlags) UnmarshalVT(dAtA []byte) error { } } m.ExcludeKeyspaceFromTableName = bool(v != 0) + case 11: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field TransactionChunkSize", wireType) + } + m.TransactionChunkSize = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.TransactionChunkSize |= int64(b&0x7F) << shift + if b < 0x80 { + break + } + } default: iNdEx = preIndex skippy, err := skip(dAtA[iNdEx:]) diff --git a/go/vt/vtgate/vstream_manager.go b/go/vt/vtgate/vstream_manager.go index b57925144db..3b02a84abfe 100644 --- a/go/vt/vtgate/vstream_manager.go +++ b/go/vt/vtgate/vstream_manager.go @@ -52,11 +52,12 @@ type vstreamManager struct { toposerv srvtopo.Server cell string - vstreamsCreated *stats.CountersWithMultiLabels - vstreamsLag *stats.GaugesWithMultiLabels - vstreamsCount *stats.CountersWithMultiLabels - vstreamsEventsStreamed *stats.CountersWithMultiLabels - vstreamsEndedWithErrors *stats.CountersWithMultiLabels + vstreamsCreated *stats.CountersWithMultiLabels + vstreamsLag *stats.GaugesWithMultiLabels + vstreamsCount *stats.CountersWithMultiLabels + vstreamsEventsStreamed *stats.CountersWithMultiLabels + vstreamsEndedWithErrors *stats.CountersWithMultiLabels + vstreamsTransactionsChunked *stats.CountersWithMultiLabels } // maxSkewTimeoutSeconds is the maximum allowed skew between two streams when the MinimizeSkew flag is set @@ -70,6 +71,15 @@ const tabletPickerContextTimeout = 90 * time.Second // ending the stream from the tablet. const stopOnReshardDelay = 500 * time.Millisecond +// livenessTimeout is the point at which we return an error to the client if the stream has received +// no events, including heartbeats, from any of the shards. +var livenessTimeout = 10 * time.Minute + +// defaultTransactionChunkSizeBytes is the default threshold for chunking transactions. +// 0 (the default value for protobuf int64) means disabled, clients must explicitly set a value to opt in for chunking. +// Eventually we plan to enable chunking by default, for now set to 0, which is the same as the protobuf default. +const defaultTransactionChunkSizeBytes = 0 + // vstream contains the metadata for one VStream request. type vstream struct { // mu protects parts of vgtid, the semantics of a send, and journaler. @@ -136,9 +146,20 @@ type vstream struct { tabletPickerOptions discovery.TabletPickerOptions + // At what point, without any activity in the stream, should we consider it dead. + streamLivenessTimer *time.Timer + + // When a transaction exceeds this size, VStream acquires a lock to ensure contiguous, chunked delivery. + // Smaller transactions are sent without locking for better parallelism. + transactionChunkSizeBytes int + flags *vtgatepb.VStreamFlags } +func (vs *vstream) isChunkingEnabled() bool { + return vs.transactionChunkSizeBytes > 0 +} + type journalEvent struct { journal *binlogdatapb.Journal participants map[*binlogdatapb.ShardGtid]bool @@ -173,6 +194,10 @@ func newVStreamManager(resolver *srvtopo.Resolver, serv srvtopo.Server, cell str "VStreamsEndedWithErrors", "Number of vstreams that ended with errors", labels), + vstreamsTransactionsChunked: exporter.NewCountersWithMultiLabels( + "VStreamsTransactionsChunked", + "Number of transactions that exceeded TransactionChunkSize threshold and required locking for contiguous, chunked delivery", + labels), } } @@ -182,6 +207,9 @@ func (vsm *vstreamManager) VStream(ctx context.Context, tabletType topodatapb.Ta if err != nil { return vterrors.Wrap(err, "failed to resolve vstream parameters") } + log.Infof("VStream flags: minimize_skew=%v, heartbeat_interval=%v, stop_on_reshard=%v, cells=%v, cell_preference=%v, tablet_order=%v, stream_keyspace_heartbeats=%v, include_reshard_journal_events=%v, tables_to_copy=%v, exclude_keyspace_from_table_name=%v, transaction_chunk_size=%v", + flags.GetMinimizeSkew(), flags.GetHeartbeatInterval(), flags.GetStopOnReshard(), flags.Cells, flags.CellPreference, flags.TabletOrder, + flags.GetStreamKeyspaceHeartbeats(), flags.GetIncludeReshardJournalEvents(), flags.TablesToCopy, flags.GetExcludeKeyspaceFromTableName(), flags.TransactionChunkSize) ts, err := vsm.toposerv.GetTopoServer() if err != nil { return vterrors.Wrap(err, "failed to get topology server") @@ -190,6 +218,13 @@ func (vsm *vstreamManager) VStream(ctx context.Context, tabletType topodatapb.Ta log.Errorf("unable to get topo server in VStream()") return vterrors.Errorf(vtrpcpb.Code_INTERNAL, "unable to get topoology server") } + transactionChunkSizeBytes := defaultTransactionChunkSizeBytes + if flags.TransactionChunkSize > 0 && flags.GetMinimizeSkew() { + log.Warning("Minimize skew cannot be set with transaction chunk size (can cause deadlock), ignoring transaction chunk size.") + } else if flags.TransactionChunkSize > 0 { + transactionChunkSizeBytes = int(flags.TransactionChunkSize) + } + vs := &vstream{ vgtid: vgtid, tabletType: tabletType, @@ -208,6 +243,7 @@ func (vsm *vstreamManager) VStream(ctx context.Context, tabletType topodatapb.Ta heartbeatInterval: flags.GetHeartbeatInterval(), ts: ts, copyCompletedShard: make(map[string]struct{}), + transactionChunkSizeBytes: transactionChunkSizeBytes, tabletPickerOptions: discovery.TabletPickerOptions{ CellPreference: flags.GetCellPreference(), TabletOrder: flags.GetTabletOrder(), @@ -224,7 +260,6 @@ func (vsm *vstreamManager) VStream(ctx context.Context, tabletType topodatapb.Ta // resolveParams provides defaults for the inputs if they're not specified. func (vsm *vstreamManager) resolveParams(ctx context.Context, tabletType topodatapb.TabletType, vgtid *binlogdatapb.VGtid, filter *binlogdatapb.Filter, flags *vtgatepb.VStreamFlags) (*binlogdatapb.VGtid, *binlogdatapb.Filter, *vtgatepb.VStreamFlags, error) { - if filter == nil { filter = &binlogdatapb.Filter{ Rules: []*binlogdatapb.Rule{{ @@ -319,9 +354,23 @@ func (vsm *vstreamManager) GetTotalStreamDelay() int64 { func (vs *vstream) stream(ctx context.Context) error { ctx, vs.cancel = context.WithCancel(ctx) - defer vs.cancel() + if vs.streamLivenessTimer == nil { + vs.streamLivenessTimer = time.NewTimer(livenessTimeout) + defer vs.streamLivenessTimer.Stop() + } + + vs.wg.Add(1) + go func() { + defer vs.wg.Done() - go vs.sendEvents(ctx) + // sendEvents returns either if the given context has been canceled or if + // an error is returned from the callback. If the callback returns an error, + // we need to cancel the context to stop the other stream goroutines + // and to unblock the VStream call. + defer vs.cancel() + + vs.sendEvents(ctx) + }() // Make a copy first, because the ShardGtids list can change once streaming starts. copylist := append(([]*binlogdatapb.ShardGtid)(nil), vs.vgtid.ShardGtids...) @@ -351,6 +400,7 @@ func (vs *vstream) sendEvents(ctx context.Context) { send := func(evs []*binlogdatapb.VEvent) error { if err := vs.send(evs); err != nil { + log.Infof("Error in vstream send (wrapper) to client: %v", err) vs.once.Do(func() { vs.setError(err, "error sending events") }) @@ -358,15 +408,18 @@ func (vs *vstream) sendEvents(ctx context.Context) { } return nil } + for { select { case <-ctx.Done(): + log.Infof("vstream context canceled") vs.once.Do(func() { vs.setError(ctx.Err(), "context ended while sending events") }) return case evs := <-vs.eventCh: if err := send(evs); err != nil { + log.Infof("Error in vstream send events to client: %v", err) vs.once.Do(func() { vs.setError(err, "error sending events") }) @@ -381,11 +434,19 @@ func (vs *vstream) sendEvents(ctx context.Context) { CurrentTime: now, }} if err := send(evs); err != nil { + log.Infof("Error in vstream sending heartbeat to client: %v", err) vs.once.Do(func() { vs.setError(err, "error sending heartbeat") }) return } + case <-vs.streamLivenessTimer.C: + msg := fmt.Sprintf("vstream failed liveness checks as there was no activity, including heartbeats, within the last %v", livenessTimeout) + log.Infof("Error in vstream: %s", msg) + vs.once.Do(func() { + vs.setError(vterrors.New(vtrpcpb.Code_UNAVAILABLE, msg), "vstream is fully throttled or otherwise hung") + }) + return } } } @@ -406,7 +467,7 @@ func (vs *vstream) startOneStream(ctx context.Context, sgtid *binlogdatapb.Shard // Set the error on exit. First one wins. if err != nil { - log.Errorf("Error in vstream for %+v: %s", sgtid, err) + log.Errorf("Error in vstream for %+v: %v", sgtid, err) // Get the original/base error. uerr := vterrors.UnwrapAll(err) if !errors.Is(uerr, context.Canceled) && !errors.Is(uerr, context.DeadlineExceeded) { @@ -585,11 +646,9 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha if err != nil { return tabletPickerErr(err) } - tabletAliasString := topoproto.TabletAliasString(tablet.Alias) - - log.Infof("Picked a %s tablet for VStream in %s/%s within the %s cell(s)", - vs.tabletType.String(), sgtid.GetKeyspace(), sgtid.GetShard(), strings.Join(cells, ",")) + log.Infof("Picked %s tablet %s for VStream in %s/%s within the %s cell(s)", + vs.tabletType.String(), tabletAliasString, sgtid.GetKeyspace(), sgtid.GetShard(), strings.Join(cells, ",")) target := &querypb.Target{ Keyspace: sgtid.Keyspace, @@ -656,8 +715,18 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha TableLastPKs: sgtid.TablePKs, Options: options, } - log.Infof("Starting to vstream from %s, with req %+v", tabletAliasString, req) + var txLockHeld bool + var inTransaction bool + var accumulatedSize int + + defer func() { + if txLockHeld { + vs.mu.Unlock() + txLockHeld = false + } + }() + err = tabletConn.VStream(ctx, req, func(events []*binlogdatapb.VEvent) error { // We received a valid event. Reset error count. errCount = 0 @@ -667,6 +736,7 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha return vterrors.Wrapf(ctx.Err(), "context ended while streaming from tablet %s in %s/%s", tabletAliasString, sgtid.Keyspace, sgtid.Shard) case streamErr := <-errCh: + log.Infof("vstream for %s/%s ended due to health check, should retry: %v", sgtid.Keyspace, sgtid.Shard, streamErr) // You must return Code_UNAVAILABLE here to trigger a restart. return vterrors.Errorf(vtrpcpb.Code_UNAVAILABLE, "error streaming from tablet %s in %s/%s: %s", tabletAliasString, sgtid.Keyspace, sgtid.Shard, streamErr.Error()) @@ -674,23 +744,33 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha // Unreachable. // This can happen if a server misbehaves and does not end // the stream after we return an error. + log.Infof("vstream for %s/%s ended due to journal event, returning io.EOF", sgtid.Keyspace, sgtid.Shard) return io.EOF default: } aligningStreamsErr := fmt.Sprintf("error aligning streams across %s/%s", sgtid.Keyspace, sgtid.Shard) - sendingEventsErr := fmt.Sprintf("error sending event batch from tablet %s", tabletAliasString) + sendingEventsErr := "error sending event batch from tablet " + tabletAliasString sendevents := make([]*binlogdatapb.VEvent, 0, len(events)) for i, event := range events { + vs.streamLivenessTimer.Reset(livenessTimeout) // Any event in the stream demonstrates liveness + accumulatedSize += event.SizeVT() switch event.Type { + case binlogdatapb.VEventType_BEGIN: + // Mark the start of a transaction. + // Also queue the events for sending to the client. + inTransaction = true + sendevents = append(sendevents, event) case binlogdatapb.VEventType_FIELD: ev := maybeUpdateTableName(event, sgtid.Keyspace, vs.flags.GetExcludeKeyspaceFromTableName(), extractFieldTableName) sendevents = append(sendevents, ev) case binlogdatapb.VEventType_ROW: ev := maybeUpdateTableName(event, sgtid.Keyspace, vs.flags.GetExcludeKeyspaceFromTableName(), extractRowTableName) sendevents = append(sendevents, ev) - case binlogdatapb.VEventType_COMMIT, binlogdatapb.VEventType_DDL, binlogdatapb.VEventType_OTHER: + case binlogdatapb.VEventType_COMMIT, binlogdatapb.VEventType_DDL, binlogdatapb.VEventType_OTHER, binlogdatapb.VEventType_ROLLBACK: + inTransaction = false + accumulatedSize = 0 sendevents = append(sendevents, event) eventss = append(eventss, sendevents) @@ -698,8 +778,20 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha return vterrors.Wrap(err, aligningStreamsErr) } - if err := vs.sendAll(ctx, sgtid, eventss); err != nil { - return vterrors.Wrap(err, sendingEventsErr) + var sendErr error + if vs.isChunkingEnabled() && txLockHeld { + // If chunking is enabled and we are holding the lock (only possible to acquire lock when chunking is enabled), then send the events. + sendErr = vs.sendEventsLocked(ctx, sgtid, eventss) + vs.mu.Unlock() + txLockHeld = false + } else { + // If chunking is not enabled or this transaction was small enough to not need chunking, + // fall back to default behavior of sending entire transaction atomically. + sendErr = vs.sendAll(ctx, sgtid, eventss) + } + if sendErr != nil { + log.Infof("vstream for %s/%s, error in sendAll: %v", sgtid.Keyspace, sgtid.Shard, sendErr) + return vterrors.Wrap(sendErr, sendingEventsErr) } eventss = nil sendevents = nil @@ -715,6 +807,7 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha } if err := vs.sendAll(ctx, sgtid, eventss); err != nil { + log.Infof("vstream for %s/%s, error in sendAll, on copy completed event: %v", sgtid.Keyspace, sgtid.Shard, err) return vterrors.Wrap(err, sendingEventsErr) } eventss = nil @@ -745,6 +838,7 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha } eventss = append(eventss, sendevents) if err := vs.sendAll(ctx, sgtid, eventss); err != nil { + log.Infof("vstream for %s/%s, error in sendAll, on journal event: %v", sgtid.Keyspace, sgtid.Shard, err) return vterrors.Wrap(err, sendingEventsErr) } eventss = nil @@ -779,6 +873,7 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha if endTimer != nil { <-endTimer.C } + log.Infof("vstream for %s/%s ended due to journal event, returning io.EOF", sgtid.Keyspace, sgtid.Shard) return io.EOF } } @@ -791,6 +886,41 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha if len(sendevents) != 0 { eventss = append(eventss, sendevents) } + + // If chunking is enabled, and we are holding the lock (only possible when enabled), and we are not in a transaction + // release the lock (this should not ever execute, acts as a safety check). + if vs.isChunkingEnabled() && txLockHeld && !inTransaction { + log.Warning("Detected held lock but not in a transaction, releasing the lock") + vs.mu.Unlock() + txLockHeld = false + } + + // If chunking is enabled, and we are holding the lock (only possible when chunking is enabled), send the events. + if vs.isChunkingEnabled() && txLockHeld && len(eventss) > 0 { + if err := vs.sendEventsLocked(ctx, sgtid, eventss); err != nil { + log.Infof("vstream for %s/%s, error in sendAll at end of callback: %v", sgtid.Keyspace, sgtid.Shard, err) + return vterrors.Wrap(err, sendingEventsErr) + } + eventss = nil + } + + // If chunking is enabled and we are in a transaction, and we do not yet hold the lock, and the accumulated size is greater than our chunk size + // then acquire the lock, so that we can send the events, and begin chunking the transaction. + if vs.isChunkingEnabled() && inTransaction && !txLockHeld && accumulatedSize > vs.transactionChunkSizeBytes { + log.Infof("vstream for %s/%s: transaction size %d bytes exceeds chunk size %d bytes, acquiring lock for contiguous, chunked delivery", + sgtid.Keyspace, sgtid.Shard, accumulatedSize, vs.transactionChunkSizeBytes) + vs.vsm.vstreamsTransactionsChunked.Add(labelValues, 1) + vs.mu.Lock() + txLockHeld = true + if len(eventss) > 0 { + if err := vs.sendEventsLocked(ctx, sgtid, eventss); err != nil { + log.Infof("vstream for %s/%s, error sending events after acquiring lock: %v", sgtid.Keyspace, sgtid.Shard, err) + return vterrors.Wrap(err, sendingEventsErr) + } + eventss = nil + } + } + return nil }) // If stream was ended (by a journal event), return nil without checking for error. @@ -807,7 +937,7 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha retry, ignoreTablet := vs.shouldRetry(err) if !retry { - log.Errorf("vstream for %s/%s error: %v", sgtid.Keyspace, sgtid.Shard, err) + log.Infof("vstream for %s/%s error, no retry: %v", sgtid.Keyspace, sgtid.Shard, err) return vterrors.Wrapf(err, "error in vstream for %s/%s on tablet %s", sgtid.Keyspace, sgtid.Shard, tabletAliasString) } @@ -824,7 +954,6 @@ func (vs *vstream) streamFromTablet(ctx context.Context, sgtid *binlogdatapb.Sha } log.Infof("vstream for %s/%s error, retrying: %v", sgtid.Keyspace, sgtid.Shard, err) } - } // maybeUpdateTableNames updates table names when the ExcludeKeyspaceFromTableName flag is disabled. @@ -907,6 +1036,11 @@ func (vs *vstream) shouldRetry(err error) (retry bool, ignoreTablet bool) { func (vs *vstream) sendAll(ctx context.Context, sgtid *binlogdatapb.ShardGtid, eventss [][]*binlogdatapb.VEvent) error { vs.mu.Lock() defer vs.mu.Unlock() + return vs.sendEventsLocked(ctx, sgtid, eventss) +} + +// sendEventsLocked sends events assuming vs.mu is already held by the caller. +func (vs *vstream) sendEventsLocked(ctx context.Context, sgtid *binlogdatapb.ShardGtid, eventss [][]*binlogdatapb.VEvent) error { labelValues := []string{sgtid.Keyspace, sgtid.Shard, vs.tabletType.String()} // Send all chunks while holding the lock. @@ -1126,7 +1260,8 @@ func (vs *vstream) keyspaceHasBeenResharded(ctx context.Context, keyspace string for _, s := range ksShardGTIDs { shard := shards[s.GetShard()] if shard == nil { - return false, vterrors.Errorf(vtrpcpb.Code_FAILED_PRECONDITION, "shard provided in VGTID, %s, not found in the %s keyspace", s.GetShard(), keyspace) + return false, vterrors.Errorf(vtrpcpb.Code_FAILED_PRECONDITION, "shard provided in VGTID, %s, not found in the %s keyspace", + s.GetShard(), keyspace) } if !shard.GetIsPrimaryServing() { reshardPossible = true diff --git a/go/vt/vtgate/vstream_manager_test.go b/go/vt/vtgate/vstream_manager_test.go index 75304a80fcf..e69d53d4832 100644 --- a/go/vt/vtgate/vstream_manager_test.go +++ b/go/vt/vtgate/vstream_manager_test.go @@ -18,18 +18,17 @@ package vtgate import ( "context" + "errors" "fmt" "os" "runtime/pprof" "strings" "sync" - "sync/atomic" "testing" "time" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" - "google.golang.org/protobuf/proto" "vitess.io/vitess/go/stats" "vitess.io/vitess/go/test/utils" @@ -112,16 +111,25 @@ func TestVStreamSkew(t *testing.T) { vgtid.ShardGtids = append(vgtid.ShardGtids, &binlogdatapb.ShardGtid{Keyspace: ks, Gtid: "pos", Shard: "20-40"}) go stream(sbc1, ks, "20-40", tcase.numEventsPerShard, tcase.shard1idx) } - ch := startVStream(ctx, t, vsm, vgtid, &vtgatepb.VStreamFlags{MinimizeSkew: true}) - var receivedEvents []*binlogdatapb.VEvent - for len(receivedEvents) < int(want) { - select { - case <-time.After(1 * time.Minute): - require.FailNow(t, "test timed out") - case response := <-ch: - receivedEvents = append(receivedEvents, response.Events...) + + vstreamCtx, vstreamCancel := context.WithTimeout(ctx, 1*time.Minute) + defer vstreamCancel() + + receivedEvents := make([]*binlogdatapb.VEvent, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{MinimizeSkew: true}, func(events []*binlogdatapb.VEvent) error { + receivedEvents = append(receivedEvents, events...) + + if int64(len(receivedEvents)) == want { + // Stop streaming after receiving both expected responses. + vstreamCancel() } - } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + require.Equal(t, int(want), int(len(receivedEvents))) require.Equal(t, tcase.expectedDelays, vsm.GetTotalStreamDelay()-previousDelays) previousDelays = vsm.GetTotalStreamDelay() @@ -132,6 +140,7 @@ func TestVStreamSkew(t *testing.T) { func TestVStreamEventsExcludeKeyspaceFromTableName(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() + cell := "aa" ks := "TestVStream" _ = createSandbox(ks) @@ -186,23 +195,26 @@ func TestVStreamEventsExcludeKeyspaceFromTableName(t *testing.T) { Gtid: "pos", }}, } - ch := make(chan *binlogdatapb.VStreamResponse) - go func() { - err := vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{ExcludeKeyspaceFromTableName: true}, func(events []*binlogdatapb.VEvent) error { - ch <- &binlogdatapb.VStreamResponse{Events: events} - return nil - }) - wantErr := "context canceled" - if err == nil || !strings.Contains(err.Error(), wantErr) { - t.Errorf("vstream end: %v, must contain %v", err.Error(), wantErr) + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedResponses := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{ExcludeKeyspaceFromTableName: true}, func(events []*binlogdatapb.VEvent) error { + receivedResponses = append(receivedResponses, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedResponses) == 2 { + // Stop streaming after receiving both expected responses. + vstreamCancel() } - ch <- nil - }() - verifyEvents(t, ch, want1, want2) - // Ensure the go func error return was verified. - cancel() - <-ch + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.ElementsMatch(t, []*binlogdatapb.VStreamResponse{want1, want2}, receivedResponses) } func TestVStreamEvents(t *testing.T) { @@ -261,23 +273,26 @@ func TestVStreamEvents(t *testing.T) { Gtid: "pos", }}, } - ch := make(chan *binlogdatapb.VStreamResponse) - go func() { - err := vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { - ch <- &binlogdatapb.VStreamResponse{Events: events} - return nil - }) - wantErr := "context canceled" - if err == nil || !strings.Contains(err.Error(), wantErr) { - t.Errorf("vstream end: %v, must contain %v", err.Error(), wantErr) + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedEvents := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedEvents = append(receivedEvents, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedEvents) == 2 { + // Stop streaming after receiving both expected responses. + vstreamCancel() } - ch <- nil - }() - verifyEvents(t, ch, want1, want2) - // Ensure the go func error return was verified. - cancel() - <-ch + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.ElementsMatch(t, []*binlogdatapb.VStreamResponse{want1, want2}, receivedEvents) } func BenchmarkVStreamEvents(b *testing.B) { @@ -338,53 +353,37 @@ func BenchmarkVStreamEvents(b *testing.B) { Gtid: "pos", }}, } - start := make(chan struct{}) - ch := make(chan *binlogdatapb.VStreamResponse) - go func() { - close(start) - err := vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, - &vtgatepb.VStreamFlags{ExcludeKeyspaceFromTableName: tt.excludeKeyspaceFromTableName}, func(events []*binlogdatapb.VEvent) error { - ch <- &binlogdatapb.VStreamResponse{Events: events} - return nil - }) - wantErr := "context canceled" - if err == nil || !strings.Contains(err.Error(), wantErr) { - b.Errorf("vstream end: %v, must contain %v", err.Error(), wantErr) - } - ch <- nil - }() - // Start the timer when the VStream begins - <-start + // Start the timer and CPU profile after all setup is done b.ResetTimer() if os.Getenv("PROFILE_CPU") == "true" { pprof.StartCPUProfile(f) } + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + received := 0 - for { - resp := <-ch - if resp == nil { - close(ch) - break - } - received += len(resp.Events) + err = vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{ExcludeKeyspaceFromTableName: tt.excludeKeyspaceFromTableName}, func(events []*binlogdatapb.VEvent) error { + received += len(events) + if received >= totalEvents { - b.Logf("Received events %d, expected total %d", received, totalEvents) - b.StopTimer() - if os.Getenv("PROFILE_CPU") == "true" { - pprof.StopCPUProfile() - } - cancel() + vstreamCancel() } - } - if received < totalEvents { - b.Errorf("expected at least %d events, got %d", totalEvents, received) + return nil + }) + + b.Logf("Received events %d, expected total %d", received, totalEvents) + b.StopTimer() + if os.Getenv("PROFILE_CPU") == "true" { + pprof.StopCPUProfile() } - cancel() - <-ch + require.Error(b, err) + require.ErrorIs(b, vterrors.UnwrapAll(err), context.Canceled) + + require.GreaterOrEqual(b, received, totalEvents) }) } } @@ -414,7 +413,6 @@ func TestVStreamChunks(t *testing.T) { rowEncountered := false doneCounting := false - var rowCount, ddlCount atomic.Int32 vgtid := &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ Keyspace: ks, @@ -426,7 +424,12 @@ func TestVStreamChunks(t *testing.T) { Gtid: "pos", }}, } - _ = vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + var rowCount, ddlCount int + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { switch events[0].Type { case binlogdatapb.VEventType_ROW: if doneCounting { @@ -434,30 +437,195 @@ func TestVStreamChunks(t *testing.T) { return fmt.Errorf("unexpected event: %v", events[0]) } rowEncountered = true - rowCount.Add(1) + rowCount += 1 + case binlogdatapb.VEventType_COMMIT: if !rowEncountered { t.Errorf("Unexpected event, COMMIT after non-rows: %v", events[0]) return fmt.Errorf("unexpected event: %v", events[0]) } doneCounting = true + case binlogdatapb.VEventType_DDL: if !doneCounting && rowEncountered { t.Errorf("Unexpected event, DDL during ROW events: %v", events[0]) return fmt.Errorf("unexpected event: %v", events[0]) } - ddlCount.Add(1) + ddlCount += 1 + default: t.Errorf("Unexpected event: %v", events[0]) return fmt.Errorf("unexpected event: %v", events[0]) } - if rowCount.Load() == int32(100) && ddlCount.Load() == int32(100) { - cancel() + + if rowCount == 100 && ddlCount == 100 { + vstreamCancel() } + return nil }) - assert.Equal(t, int32(100), rowCount.Load()) - assert.Equal(t, int32(100), ddlCount.Load()) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.Equal(t, 100, rowCount) + require.Equal(t, 100, ddlCount) +} + +// Verifies that large chunked transactions from one shard +// are not interleaved with events from other shards. +func TestVStreamChunksOverSizeThreshold(t *testing.T) { + ctx := context.Background() + ks := "TestVStream" + cell := "aa" + _ = createSandbox(ks) + hc := discovery.NewFakeHealthCheck(nil) + st := getSandboxTopo(ctx, cell, ks, []string{"-20", "20-40"}) + vsm := newTestVStreamManager(ctx, hc, st, cell) + vsm.vstreamsTransactionsChunked.ResetAll() + sbc0 := hc.AddTestTablet("aa", "1.1.1.1", 1001, ks, "-20", topodatapb.TabletType_PRIMARY, true, 1, nil) + addTabletToSandboxTopo(t, ctx, st, ks, "-20", sbc0.Tablet()) + sbc1 := hc.AddTestTablet("aa", "1.1.1.1", 1002, ks, "20-40", topodatapb.TabletType_PRIMARY, true, 1, nil) + addTabletToSandboxTopo(t, ctx, st, ks, "20-40", sbc1.Tablet()) + + rowData := make([]byte, 100) + for i := range rowData { + rowData[i] = byte(i % 256) + } + + sbc0.AddVStreamEvents([]*binlogdatapb.VEvent{{Type: binlogdatapb.VEventType_BEGIN}}, nil) + for range 50 { + sbc0.AddVStreamEvents([]*binlogdatapb.VEvent{{ + Type: binlogdatapb.VEventType_ROW, + RowEvent: &binlogdatapb.RowEvent{ + TableName: "shard0_table", + RowChanges: []*binlogdatapb.RowChange{{ + After: &querypb.Row{ + Lengths: []int64{int64(len(rowData))}, + Values: rowData, + }, + }}, + }, + }}, nil) + } + + sbc1.AddVStreamEvents([]*binlogdatapb.VEvent{{Type: binlogdatapb.VEventType_BEGIN}}, nil) + sbc1.AddVStreamEvents([]*binlogdatapb.VEvent{{ + Type: binlogdatapb.VEventType_ROW, + RowEvent: &binlogdatapb.RowEvent{ + TableName: "shard0_table", + RowChanges: []*binlogdatapb.RowChange{{ + After: &querypb.Row{ + Lengths: []int64{8}, + Values: rowData[:8], + }, + }}, + }, + }}, nil) + sbc1.AddVStreamEvents([]*binlogdatapb.VEvent{{Type: binlogdatapb.VEventType_COMMIT}}, nil) + + for range 50 { + sbc0.AddVStreamEvents([]*binlogdatapb.VEvent{{ + Type: binlogdatapb.VEventType_ROW, + RowEvent: &binlogdatapb.RowEvent{ + TableName: "shard0_table", + RowChanges: []*binlogdatapb.RowChange{{ + After: &querypb.Row{ + Lengths: []int64{int64(len(rowData))}, + Values: rowData, + }, + }}, + }, + }}, nil) + } + sbc0.AddVStreamEvents([]*binlogdatapb.VEvent{{Type: binlogdatapb.VEventType_COMMIT}}, nil) + + vgtid := &binlogdatapb.VGtid{ + ShardGtids: []*binlogdatapb.ShardGtid{{ + Keyspace: ks, + Shard: "-20", + Gtid: "pos", + }, { + Keyspace: ks, + Shard: "20-40", + Gtid: "pos", + }}, + } + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + // Track transaction states + type txState struct { + shard string + hasBegin bool + hasCommit bool + rowCount int + } + var currentTx *txState + var completedTxs []*txState + + flags := &vtgatepb.VStreamFlags{ + TransactionChunkSize: 1024, + } + + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, flags, func(events []*binlogdatapb.VEvent) error { + for _, event := range events { + switch event.Type { + case binlogdatapb.VEventType_VGTID: + if event.Keyspace != "" && event.Shard != "" { + shard := event.Keyspace + "/" + event.Shard + if currentTx != nil && currentTx.shard != "" && currentTx.shard != shard { + return fmt.Errorf("VGTID from shard %s while transaction from shard %s is in progress (interleaving detected)", shard, currentTx.shard) + } + if currentTx != nil && currentTx.shard == "" { + currentTx.shard = shard + } + } + case binlogdatapb.VEventType_BEGIN: + if currentTx != nil && !currentTx.hasCommit { + return fmt.Errorf("BEGIN received while transaction %s is still open (interleaving detected)", currentTx.shard) + } + currentTx = &txState{hasBegin: true} + case binlogdatapb.VEventType_ROW: + if currentTx == nil { + return errors.New("ROW event outside transaction") + } + currentTx.rowCount++ + case binlogdatapb.VEventType_COMMIT: + if currentTx == nil { + return errors.New("COMMIT without BEGIN") + } + currentTx.hasCommit = true + completedTxs = append(completedTxs, currentTx) + t.Logf("COMMIT transaction for shard %s (rows=%d, completed_txs=%d)", currentTx.shard, currentTx.rowCount, len(completedTxs)) + currentTx = nil + default: + } + } + + if len(completedTxs) == 2 { + vstreamCancel() + } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + require.Equal(t, 2, len(completedTxs), "Should receive both transactions") + + var rowCounts []int + for _, tx := range completedTxs { + require.True(t, tx.hasBegin, "Transaction should have BEGIN") + require.True(t, tx.hasCommit, "Transaction should have COMMIT") + rowCounts = append(rowCounts, tx.rowCount) + } + require.ElementsMatch(t, []int{1, 100}, rowCounts, "Should have one transaction with 1 row and one with 100 rows") + + chunkedCounts := vsm.vstreamsTransactionsChunked.Counts() + require.Contains(t, chunkedCounts, "TestVStream.-20.PRIMARY", "Should have chunked transaction metric for -20 shard") + require.GreaterOrEqual(t, chunkedCounts["TestVStream.-20.PRIMARY"], int64(1), "Should have at least one chunked transaction") } func TestVStreamMulti(t *testing.T) { @@ -497,15 +665,34 @@ func TestVStreamMulti(t *testing.T) { Gtid: "pos", }}, } - ch := startVStream(ctx, t, vsm, vgtid, nil) - <-ch - response := <-ch + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedEvents := make([]*binlogdatapb.VEvent, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedEvents = append(receivedEvents, events...) + + if len(receivedEvents) == 4 { + // Stop streaming after receiving both expected responses. + vstreamCancel() + } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.Equal(t, 4, len(receivedEvents)) + var got *binlogdatapb.VGtid - for _, ev := range response.Events { + for _, ev := range receivedEvents { if ev.Type == binlogdatapb.VEventType_VGTID { got = ev.Vgtid } } + want := &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ Keyspace: ks, @@ -517,15 +704,15 @@ func TestVStreamMulti(t *testing.T) { Gtid: "gtid02", }}, } - if !proto.Equal(got, want) { - t.Errorf("VGtid:\n%v, want\n%v", got, want) - } + + require.ElementsMatch(t, got.ShardGtids, want.ShardGtids) } func TestVStreamsMetrics(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() - cell := "aa" + // Use a unique cell to avoid parallel tests interfering with each other's metrics + cell := "ab" ks := "TestVStream" _ = createSandbox(ks) hc := discovery.NewFakeHealthCheck(nil) @@ -564,41 +751,65 @@ func TestVStreamsMetrics(t *testing.T) { Gtid: "pos", }}, } - ch := startVStream(ctx, t, vsm, vgtid, nil) - <-ch - <-ch + expectedLabels1 := "TestVStream.-20.PRIMARY" expectedLabels2 := "TestVStream.20-40.PRIMARY" - wantVStreamsCreated := make(map[string]int64) - wantVStreamsCreated[expectedLabels1] = 1 - wantVStreamsCreated[expectedLabels2] = 1 - assert.Equal(t, wantVStreamsCreated, vsm.vstreamsCreated.Counts(), "vstreamsCreated matches") - - wantVStreamsLag := make(map[string]int64) - wantVStreamsLag[expectedLabels1] = 5 - wantVStreamsLag[expectedLabels2] = 7 - assert.Equal(t, wantVStreamsLag, vsm.vstreamsLag.Counts(), "vstreamsLag matches") - - wantVStreamsCount := make(map[string]int64) - wantVStreamsCount[expectedLabels1] = 1 - wantVStreamsCount[expectedLabels2] = 1 - assert.Equal(t, wantVStreamsCount, vsm.vstreamsCount.Counts(), "vstreamsCount matches") - - wantVStreamsEventsStreamed := make(map[string]int64) - wantVStreamsEventsStreamed[expectedLabels1] = 2 - wantVStreamsEventsStreamed[expectedLabels2] = 2 - assert.Equal(t, wantVStreamsEventsStreamed, vsm.vstreamsEventsStreamed.Counts(), "vstreamsEventsStreamed matches") - - wantVStreamsEndedWithErrors := make(map[string]int64) - wantVStreamsEndedWithErrors[expectedLabels1] = 0 - wantVStreamsEndedWithErrors[expectedLabels2] = 0 - assert.Equal(t, wantVStreamsEndedWithErrors, vsm.vstreamsEndedWithErrors.Counts(), "vstreamsEndedWithErrors matches") + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedResponses := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedResponses = append(receivedResponses, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedResponses) == 2 { + vstreamCancel() + } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + require.Equal(t, 2, len(receivedResponses)) + + counts := vsm.vstreamsCount.Counts() + require.Contains(t, counts, expectedLabels1, "Should have count for shard -20") + require.Contains(t, counts, expectedLabels2, "Should have count for shard 20-40") + require.Equal(t, int64(0), counts[expectedLabels1], "Shard -20 should have 0 active streams after completion") + require.Equal(t, int64(0), counts[expectedLabels2], "Shard 20-40 should have 0 active streams after completion") + + created := vsm.vstreamsCreated.Counts() + require.Contains(t, created, expectedLabels1, "Should have created count for shard -20") + require.Contains(t, created, expectedLabels2, "Should have created count for shard 20-40") + require.Equal(t, int64(1), created[expectedLabels1], "Shard -20 should have created 1 stream") + require.Equal(t, int64(1), created[expectedLabels2], "Shard 20-40 should have created 1 stream") + + lag := vsm.vstreamsLag.Counts() + require.Contains(t, lag, expectedLabels1, "Should have lag for shard -20") + require.Contains(t, lag, expectedLabels2, "Should have lag for shard 20-40") + require.Equal(t, int64(5), lag[expectedLabels1], "Shard -20 should have lag of 5") + require.Equal(t, int64(7), lag[expectedLabels2], "Shard 20-40 should have lag of 7") + + streamed := vsm.vstreamsEventsStreamed.Counts() + require.Contains(t, streamed, expectedLabels1, "Should have events streamed for shard -20") + require.Contains(t, streamed, expectedLabels2, "Should have events streamed for shard 20-40") + require.Equal(t, int64(2), streamed[expectedLabels1], "Shard -20 should have streamed 2 events") + require.Equal(t, int64(2), streamed[expectedLabels2], "Shard 20-40 should have streamed 2 events") + + errors := vsm.vstreamsEndedWithErrors.Counts() + require.Contains(t, errors, expectedLabels1, "Should have error count for shard -20") + require.Contains(t, errors, expectedLabels2, "Should have error count for shard 20-40") + require.Equal(t, int64(0), errors[expectedLabels1], "Shard -20 should have 0 errors") + require.Equal(t, int64(0), errors[expectedLabels2], "Shard 20-40 should have 0 errors") } func TestVStreamsMetricsErrors(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) defer cancel() - cell := "aa" + + // Use a unique cell to avoid parallel tests interfering with each other's metrics + cell := "ac" ks := "TestVStream" _ = createSandbox(ks) hc := discovery.NewFakeHealthCheck(nil) @@ -617,11 +828,11 @@ func TestVStreamsMetricsErrors(t *testing.T) { const wantErr = "Invalid arg message" sbc0.AddVStreamEvents(nil, vterrors.Errorf(vtrpcpb.Code_INVALID_ARGUMENT, wantErr)) - send1 := []*binlogdatapb.VEvent{ + expectedEvents := []*binlogdatapb.VEvent{ {Type: binlogdatapb.VEventType_GTID, Gtid: "gtid02"}, {Type: binlogdatapb.VEventType_COMMIT, Timestamp: 10, CurrentTime: 17 * 1e9}, } - sbc1.AddVStreamEvents(send1, nil) + sbc1.AddVStreamEvents(expectedEvents, nil) vgtid := &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ @@ -634,29 +845,100 @@ func TestVStreamsMetricsErrors(t *testing.T) { Gtid: "pos", }}, } - ch := make(chan *binlogdatapb.VStreamResponse) - done := make(chan struct{}) - go func() { - err := vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { - ch <- &binlogdatapb.VStreamResponse{Events: events} - return nil - }) - if err == nil || !strings.Contains(err.Error(), wantErr) { - require.ErrorContains(t, err, wantErr) + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + results := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + results = append(results, &binlogdatapb.VStreamResponse{Events: events}) + + if len(results) == 2 { + // We should never actually see 2 responses come in + vstreamCancel() } - close(done) - }() - <-ch - <-done - expectedLabels1 := "TestVStream.-20.PRIMARY" - expectedLabels2 := "TestVStream.20-40.PRIMARY" + return nil + }) + + require.Error(t, err) + require.ErrorContains(t, err, wantErr) + + // Because there's essentially a race condition between the two streams, + // we may get 0 or 1 results, depending on whether the error from + // sbc0 or the events from sbc1 come first. + require.LessOrEqual(t, len(results), 1) + if len(results) == 1 { + require.Len(t, results[0].Events, 2) + } + + // When we verify the metrics, we should see that the -20 stream had an error, + // while the 20-40 stream might have one too (if the error from -20 came first), + // or might not (if the events from 20-40 came first). + // So we only verify the -20 metrics exactly, while the 20-40 metrics are + // verified to be at least 0 or 1 as appropriate. + + errorCounts := vsm.vstreamsEndedWithErrors.Counts() + require.Contains(t, errorCounts, "TestVStream.-20.PRIMARY") + require.Contains(t, errorCounts, "TestVStream.20-40.PRIMARY") + + require.Equal(t, int64(1), errorCounts["TestVStream.-20.PRIMARY"]) + require.LessOrEqual(t, errorCounts["TestVStream.20-40.PRIMARY"], int64(1)) +} + +func TestVStreamErrorInCallback(t *testing.T) { + ctx, cancel := context.WithCancel(context.Background()) + defer cancel() + + // Use a unique cell to avoid parallel tests interfering with each other's metrics + cell := "ac" + ks := "TestVStream" + _ = createSandbox(ks) + hc := discovery.NewFakeHealthCheck(nil) + st := getSandboxTopo(ctx, cell, ks, []string{"-20", "20-40"}) + vsm := newTestVStreamManager(ctx, hc, st, cell) + vsm.vstreamsCreated.ResetAll() + vsm.vstreamsLag.ResetAll() + vsm.vstreamsCount.ResetAll() + vsm.vstreamsEventsStreamed.ResetAll() + vsm.vstreamsEndedWithErrors.ResetAll() + sbc0 := hc.AddTestTablet(cell, "1.1.1.1", 1001, ks, "-20", topodatapb.TabletType_PRIMARY, true, 1, nil) + addTabletToSandboxTopo(t, ctx, st, ks, "-20", sbc0.Tablet()) + sbc1 := hc.AddTestTablet(cell, "1.1.1.2", 1002, ks, "20-40", topodatapb.TabletType_PRIMARY, true, 1, nil) + addTabletToSandboxTopo(t, ctx, st, ks, "20-40", sbc1.Tablet()) + + send1 := []*binlogdatapb.VEvent{ + {Type: binlogdatapb.VEventType_GTID, Gtid: "gtid01"}, + {Type: binlogdatapb.VEventType_COMMIT, Timestamp: 10, CurrentTime: 15 * 1e9}, + } + sbc0.AddVStreamEvents(send1, nil) + + send2 := []*binlogdatapb.VEvent{ + {Type: binlogdatapb.VEventType_GTID, Gtid: "gtid02"}, + {Type: binlogdatapb.VEventType_COMMIT, Timestamp: 10, CurrentTime: 17 * 1e9}, + } + sbc1.AddVStreamEvents(send2, nil) + + vgtid := &binlogdatapb.VGtid{ + ShardGtids: []*binlogdatapb.ShardGtid{{ + Keyspace: ks, + Shard: "-20", + Gtid: "pos", + }, { + Keyspace: ks, + Shard: "20-40", + Gtid: "pos", + }}, + } - wantVStreamsEndedWithErrors := make(map[string]int64) - wantVStreamsEndedWithErrors[expectedLabels1] = 1 - wantVStreamsEndedWithErrors[expectedLabels2] = 0 - assert.Equal(t, wantVStreamsEndedWithErrors, vsm.vstreamsEndedWithErrors.Counts(), "vstreamsEndedWithErrors matches") + expectedError := errors.New("callback error") + + err := vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + return expectedError + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), expectedError) } func TestVStreamRetriableErrors(t *testing.T) { @@ -707,7 +989,7 @@ func TestVStreamRetriableErrors(t *testing.T) { { name: "binary log purged", code: vtrpcpb.Code_UNKNOWN, - msg: "vttablet: rpc error: code = Unknown desc = stream (at source tablet) error @ 013c5ddc-dd89-11ed-b3a1-125a006436b9:1-305627274,fe50e15a-0213-11ee-bfbe-0a048e8090b5:1-340389717: Cannot replicate because the source purged required binary logs. Replicate the missing transactions from elsewhere, or provision a new replica from backup. Consider increasing the source's binary log expiration period. The GTID sets and the missing purged transactions are too long to print in this message. For more information, please see the source's error log or the manual for GTID_SUBTRACT (errno 1236) (sqlstate HY000)", + msg: "vttablet: rpc error: code = Unknown desc = stream (at source tablet) error @ (including the GTID we failed to process) 013c5ddc-dd89-11ed-b3a1-125a006436b9:1-305627274,fe50e15a-0213-11ee-bfbe-0a048e8090b5:1-340389717: Cannot replicate because the source purged required binary logs. Replicate the missing transactions from elsewhere, or provision a new replica from backup. Consider increasing the source's binary log expiration period. The GTID sets and the missing purged transactions are too long to print in this message. For more information, please see the source's error log or the manual for GTID_SUBTRACT (errno 1236) (sqlstate HY000)", shouldRetry: true, ignoreTablet: true, }, @@ -724,8 +1006,6 @@ func TestVStreamRetriableErrors(t *testing.T) { {Type: binlogdatapb.VEventType_COMMIT}, } - want := &binlogdatapb.VStreamResponse{Events: commit} - for _, tcase := range tcases { t.Run(tcase.name, func(t *testing.T) { ctx, cancel := context.WithCancel(context.Background()) @@ -750,7 +1030,7 @@ func TestVStreamRetriableErrors(t *testing.T) { // Always have the local cell tablet error so it's ignored on retry and we pick the other one // if the error requires ignoring the tablet on retry. - sbc0.AddVStreamEvents(nil, vterrors.Errorf(tcase.code, tcase.msg)) + sbc0.AddVStreamEvents(nil, vterrors.New(tcase.code, tcase.msg)) if tcase.ignoreTablet { sbc1.AddVStreamEvents(commit, nil) @@ -766,47 +1046,30 @@ func TestVStreamRetriableErrors(t *testing.T) { }}, } - ch := make(chan *binlogdatapb.VStreamResponse) - done := make(chan struct{}) - go func() { - err := vsm.VStream(ctx, topodatapb.TabletType_REPLICA, vgtid, nil, &vtgatepb.VStreamFlags{Cells: strings.Join(cells, ",")}, func(events []*binlogdatapb.VEvent) error { - ch <- &binlogdatapb.VStreamResponse{Events: events} - return nil - }) - wantErr := "context canceled" + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() - if !tcase.shouldRetry { - wantErr = tcase.msg - } + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_REPLICA, vgtid, nil, &vtgatepb.VStreamFlags{Cells: strings.Join(cells, ",")}, func(events []*binlogdatapb.VEvent) error { + defer vstreamCancel() - if err == nil || !strings.Contains(err.Error(), wantErr) { - t.Errorf("vstream end: %v, must contain %v", err.Error(), wantErr) - } - close(done) - }() - - Loop: - for { - if tcase.shouldRetry { - select { - case event := <-ch: - got := event.CloneVT() - if !proto.Equal(got, want) { - t.Errorf("got different vstream event than expected") - } - cancel() - case <-done: - // The goroutine has completed, so break out of the loop - break Loop - } - } else { - <-done - break Loop - } + require.Equal(t, 1, len(events)) + require.Equal(t, commit, events) + + return nil + }) + + if tcase.shouldRetry { + // Expect a cancel error because the stream was retried and our callback + // was called. + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + } else { + // Expect the original error because no retry was done. + require.Error(t, err) + require.ErrorContains(t, err, tcase.msg) } }) } - } func TestVStreamShouldNotSendSourceHeartbeats(t *testing.T) { @@ -855,8 +1118,26 @@ func TestVStreamShouldNotSendSourceHeartbeats(t *testing.T) { Gtid: "pos", }}, } - ch := startVStream(ctx, t, vsm, vgtid, nil) - verifyEvents(t, ch, want) + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedResponses := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedResponses = append(receivedResponses, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedResponses) == 1 { + // Stop streaming after receiving the expected response. + vstreamCancel() + } + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.Equal(t, 1, len(receivedResponses)) + require.EqualExportedValues(t, want, receivedResponses[0]) } func TestVStreamJournalOneToMany(t *testing.T) { @@ -941,14 +1222,35 @@ func TestVStreamJournalOneToMany(t *testing.T) { Gtid: "pos", }}, } - ch := startVStream(ctx, t, vsm, vgtid, nil) - verifyEvents(t, ch, want1) - // The following two events from the different shards can come in any order. - // But the resulting VGTID should be the same after both are received. - <-ch - got := <-ch - wantevent := &binlogdatapb.VEvent{ + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedEvents := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedEvents = append(receivedEvents, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedEvents) == 3 { + // Stop streaming after receiving all expected responses. + vstreamCancel() + } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.Equal(t, 3, len(receivedEvents)) + + // First event should be the first transaction from the first shard. + require.EqualExportedValues(t, want1, receivedEvents[0]) + + // The second and third events can come in any order. + // So instead of comparing them directly, we simply verify that the GTID + // after the last event is the expected combined GTID. + + require.EqualExportedValues(t, &binlogdatapb.VEvent{ Type: binlogdatapb.VEventType_VGTID, Vgtid: &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ @@ -961,13 +1263,7 @@ func TestVStreamJournalOneToMany(t *testing.T) { Gtid: "gtid04", }}, }, - } - gotEvent := got.Events[0] - gotEvent.Keyspace = "" - gotEvent.Shard = "" - if !proto.Equal(gotEvent, wantevent) { - t.Errorf("vgtid: %v, want %v", got.Events[0], wantevent) - } + }, receivedEvents[2].Events[0]) } func TestVStreamJournalManyToOne(t *testing.T) { @@ -1060,12 +1356,28 @@ func TestVStreamJournalManyToOne(t *testing.T) { Gtid: "pos1020", }}, } - ch := startVStream(ctx, t, vsm, vgtid, nil) - // The following two events from the different shards can come in any order. - // But the resulting VGTID should be the same after both are received. - <-ch - got := <-ch - wantevent := &binlogdatapb.VEvent{ + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedResponses := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedResponses = append(receivedResponses, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedResponses) == 3 { + // Stop streaming after receiving all expected responses. + vstreamCancel() + } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.Equal(t, 3, len(receivedResponses)) + + require.EqualExportedValues(t, &binlogdatapb.VEvent{ Type: binlogdatapb.VEventType_VGTID, Vgtid: &binlogdatapb.VGtid{ ShardGtids: []*binlogdatapb.ShardGtid{{ @@ -1078,14 +1390,9 @@ func TestVStreamJournalManyToOne(t *testing.T) { Gtid: "gtid04", }}, }, - } - gotEvent := got.Events[0] - gotEvent.Keyspace = "" - gotEvent.Shard = "" - if !proto.Equal(gotEvent, wantevent) { - t.Errorf("vgtid: %v, want %v", got.Events[0], wantevent) - } - verifyEvents(t, ch, want1) + }, receivedResponses[1].Events[0]) + + require.EqualExportedValues(t, want1, receivedResponses[2]) } func TestVStreamJournalNoMatch(t *testing.T) { @@ -1212,8 +1519,32 @@ func TestVStreamJournalNoMatch(t *testing.T) { Gtid: "pos", }}, } - ch := startVStream(ctx, t, vsm, vgtid, nil) - verifyEvents(t, ch, want1, wantjn1, want2, wantjn2, want3) + + vstreamCtx, vstreamCancel := context.WithCancel(ctx) + defer vstreamCancel() + + receivedResponses := make([]*binlogdatapb.VStreamResponse, 0) + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { + receivedResponses = append(receivedResponses, &binlogdatapb.VStreamResponse{Events: events}) + + if len(receivedResponses) == 5 { + // Stop streaming after receiving all expected responses. + vstreamCancel() + } + + return nil + }) + + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.Canceled) + + require.Equal(t, 5, len(receivedResponses)) + + require.EqualExportedValues(t, want1, receivedResponses[0]) + require.EqualExportedValues(t, wantjn1, receivedResponses[1]) + require.EqualExportedValues(t, want2, receivedResponses[2]) + require.EqualExportedValues(t, wantjn2, receivedResponses[3]) + require.EqualExportedValues(t, want3, receivedResponses[4]) } func TestVStreamJournalPartialMatch(t *testing.T) { @@ -1263,14 +1594,13 @@ func TestVStreamJournalPartialMatch(t *testing.T) { Gtid: "pos1020", }}, } + err := vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { - t.Errorf("unexpected events: %v", events) - return nil + return fmt.Errorf("unexpected events: %v", events) }) - wantErr := "not all journaling participants are in the stream" - if err == nil || !strings.Contains(err.Error(), wantErr) { - t.Errorf("vstream end: %v, must contain %v", err, wantErr) - } + + require.Error(t, err) + require.Contains(t, err.Error(), "not all journaling participants are in the stream") // Try a different order (different code path) send = []*binlogdatapb.VEvent{ @@ -1292,14 +1622,13 @@ func TestVStreamJournalPartialMatch(t *testing.T) { }}, } sbc2.AddVStreamEvents(send, nil) + err = vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{}, func(events []*binlogdatapb.VEvent) error { - t.Errorf("unexpected events: %v", events) - return nil + return fmt.Errorf("unexpected events: %v", events) }) - if err == nil || !strings.Contains(err.Error(), wantErr) { - t.Errorf("vstream end: %v, must contain %v", err, wantErr) - } - cancel() + + require.Error(t, err) + require.Contains(t, err.Error(), "not all journaling participants are in the stream") } func TestResolveVStreamParams(t *testing.T) { @@ -1513,7 +1842,6 @@ func TestResolveVStreamParams(t *testing.T) { require.Equal(t, minimizeSkew, flags2.MinimizeSkew) }) } - } func TestVStreamIdleHeartbeat(t *testing.T) { @@ -1548,152 +1876,35 @@ func TestVStreamIdleHeartbeat(t *testing.T) { } for _, tcase := range testcases { t.Run(tcase.name, func(t *testing.T) { - var mu sync.Mutex var heartbeatCount int - ctx, cancel := context.WithCancel(ctx) - go func() { - vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{HeartbeatInterval: tcase.heartbeatInterval}, - func(events []*binlogdatapb.VEvent) error { - mu.Lock() - defer mu.Unlock() - for _, event := range events { - if event.Type == binlogdatapb.VEventType_HEARTBEAT { - heartbeatCount++ - } - } - return nil - }) - }() - time.Sleep(time.Duration(4500) * time.Millisecond) - mu.Lock() - defer mu.Unlock() - require.Equalf(t, heartbeatCount, tcase.want, "got %d, want %d", heartbeatCount, tcase.want) - cancel() - }) - } -} -// TestVStreamManagerHealthCheckResponseHandling tests the handling of healthcheck responses by -// the vstream manager to confirm that we are correctly restarting the vstream when we should. -func TestVStreamManagerHealthCheckResponseHandling(t *testing.T) { - ctx := utils.LeakCheckContext(t) + vstreamCtx, vstreamCancel := context.WithTimeout(ctx, time.Duration(4500)*time.Millisecond) + defer vstreamCancel() - // Capture the vstream warning log. Otherwise we need to re-implement the vstream error - // handling in SandboxConn's implementation and then we're not actually testing the - // production code. - logger := logutil.NewMemoryLogger() - log.Warningf = logger.Warningf + err := vsm.VStream(vstreamCtx, topodatapb.TabletType_PRIMARY, vgtid, nil, &vtgatepb.VStreamFlags{HeartbeatInterval: tcase.heartbeatInterval}, func(events []*binlogdatapb.VEvent) error { + for _, event := range events { + if event.Type == binlogdatapb.VEventType_HEARTBEAT { + heartbeatCount++ + } + } - cell := "aa" - ks := "TestVStream" - shard := "0" - tabletType := topodatapb.TabletType_REPLICA - _ = createSandbox(ks) - hc := discovery.NewFakeHealthCheck(nil) - st := getSandboxTopo(ctx, cell, ks, []string{shard}) - vsm := newTestVStreamManager(ctx, hc, st, cell) - vgtid := &binlogdatapb.VGtid{ - ShardGtids: []*binlogdatapb.ShardGtid{{ - Keyspace: ks, - Shard: shard, - }}, - } - source := hc.AddTestTablet(cell, "1.1.1.1", 1001, ks, shard, tabletType, true, 0, nil) - tabletAlias := topoproto.TabletAliasString(source.Tablet().Alias) - addTabletToSandboxTopo(t, ctx, st, ks, shard, source.Tablet()) - target := &querypb.Target{ - Cell: cell, - Keyspace: ks, - Shard: shard, - TabletType: tabletType, - } - highLag := uint32(discovery.GetLowReplicationLag().Seconds()) + 1 + return nil + }) - type testcase struct { - name string - hcRes *querypb.StreamHealthResponse - wantErr string - } - testcases := []testcase{ - { - name: "all healthy", // Will hit the context timeout - }, - { - name: "failure", - hcRes: &querypb.StreamHealthResponse{ - TabletAlias: source.Tablet().Alias, - Target: nil, // This is seen as a healthcheck stream failure - }, - wantErr: fmt.Sprintf("health check failed on %s", tabletAlias), - }, - { - name: "tablet type changed", - hcRes: &querypb.StreamHealthResponse{ - TabletAlias: source.Tablet().Alias, - Target: &querypb.Target{ - Cell: cell, - Keyspace: ks, - Shard: shard, - TabletType: topodatapb.TabletType_PRIMARY, - }, - PrimaryTermStartTimestamp: time.Now().Unix(), - RealtimeStats: &querypb.RealtimeStats{}, - }, - wantErr: fmt.Sprintf("tablet %s type has changed from %s to %s", - tabletAlias, tabletType, topodatapb.TabletType_PRIMARY.String()), - }, - { - name: "unhealthy", - hcRes: &querypb.StreamHealthResponse{ - TabletAlias: source.Tablet().Alias, - Target: target, - RealtimeStats: &querypb.RealtimeStats{ - HealthError: "unhealthy", - }, - }, - wantErr: fmt.Sprintf("tablet %s is no longer healthy", tabletAlias), - }, - { - name: "replication lag too high", - hcRes: &querypb.StreamHealthResponse{ - TabletAlias: source.Tablet().Alias, - Target: target, - RealtimeStats: &querypb.RealtimeStats{ - ReplicationLagSeconds: highLag, - }, - }, - wantErr: fmt.Sprintf("%s has a replication lag of %d seconds which is beyond the value provided", - tabletAlias, highLag), - }, - } + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.DeadlineExceeded) - for _, tc := range testcases { - t.Run(tc.name, func(t *testing.T) { - done := make(chan struct{}) - go func() { - sctx, cancel := context.WithTimeout(ctx, 5*time.Second) - defer cancel() - defer close(done) - // SandboxConn's VStream implementation always waits for the context to timeout. - err := vsm.VStream(sctx, tabletType, vgtid, nil, nil, func(events []*binlogdatapb.VEvent) error { - require.Fail(t, "unexpected event", "Received unexpected events: %v", events) - return nil - }) - if tc.wantErr != "" { // Otherwise we simply expect the context to timeout - if !strings.Contains(logger.String(), tc.wantErr) { - require.Fail(t, "unexpected vstream error", "vstream ended with error: %v, which did not contain: %s", err, tc.wantErr) - } - } - }() - if tc.wantErr != "" { - source.SetStreamHealthResponse(tc.hcRes) - } - <-done - logger.Clear() + require.Equalf(t, heartbeatCount, tcase.want, "got %d, want %d", heartbeatCount, tcase.want) }) } } +func TestVStreamLivenessChecks(t *testing.T) { + // This test requires VStreamEventDelay field in SandboxConn which is not available in this branch. + // The liveness timeout functionality is tested via integration tests. + t.Skip("Skipping: test infrastructure (VStreamEventDelay) not available in this branch") +} + func TestKeyspaceHasBeenSharded(t *testing.T) { ctx := utils.LeakCheckContext(t) @@ -1976,40 +2187,132 @@ func TestKeyspaceHasBeenSharded(t *testing.T) { } } -func newTestVStreamManager(ctx context.Context, hc discovery.HealthCheck, serv srvtopo.Server, cell string) *vstreamManager { - gw := NewTabletGateway(ctx, hc, serv, cell) - srvResolver := srvtopo.NewResolver(serv, gw, cell) - return newVStreamManager(srvResolver, serv, cell) -} +// TestVStreamManagerHealthCheckResponseHandling tests the handling of healthcheck responses by +// the vstream manager to confirm that we are correctly restarting the vstream when we should. +func TestVStreamManagerHealthCheckResponseHandling(t *testing.T) { + ctx := utils.LeakCheckContext(t) + + // Capture the vstream warning log. Otherwise we need to re-implement the vstream error + // handling in SandboxConn's implementation and then we're not actually testing the + // production code. + logger := logutil.NewMemoryLogger() + log.Warningf = logger.Warningf + + cell := "aa" + ks := "TestVStream" + shard := "0" + tabletType := topodatapb.TabletType_REPLICA + _ = createSandbox(ks) + hc := discovery.NewFakeHealthCheck(nil) + st := getSandboxTopo(ctx, cell, ks, []string{shard}) + vsm := newTestVStreamManager(ctx, hc, st, cell) + vgtid := &binlogdatapb.VGtid{ + ShardGtids: []*binlogdatapb.ShardGtid{{ + Keyspace: ks, + Shard: shard, + }}, + } + source := hc.AddTestTablet(cell, "1.1.1.1", 1001, ks, shard, tabletType, true, 0, nil) + tabletAlias := topoproto.TabletAliasString(source.Tablet().Alias) + addTabletToSandboxTopo(t, ctx, st, ks, shard, source.Tablet()) + target := &querypb.Target{ + Cell: cell, + Keyspace: ks, + Shard: shard, + TabletType: tabletType, + } + highLag := uint32(discovery.GetLowReplicationLag().Seconds()) + 1 -func startVStream(ctx context.Context, t *testing.T, vsm *vstreamManager, vgtid *binlogdatapb.VGtid, flags *vtgatepb.VStreamFlags) <-chan *binlogdatapb.VStreamResponse { - t.Helper() - if flags == nil { - flags = &vtgatepb.VStreamFlags{} + type testcase struct { + name string + hcRes *querypb.StreamHealthResponse + wantErr string } - ch := make(chan *binlogdatapb.VStreamResponse) - go func() { - _ = vsm.VStream(ctx, topodatapb.TabletType_PRIMARY, vgtid, nil, flags, func(events []*binlogdatapb.VEvent) error { - ch <- &binlogdatapb.VStreamResponse{Events: events} - return nil + testcases := []testcase{ + { + name: "all healthy", // Will hit the context timeout + }, + { + name: "failure", + hcRes: &querypb.StreamHealthResponse{ + TabletAlias: source.Tablet().Alias, + Target: nil, // This is seen as a healthcheck stream failure + }, + wantErr: "health check failed on " + tabletAlias, + }, + { + name: "tablet type changed", + hcRes: &querypb.StreamHealthResponse{ + TabletAlias: source.Tablet().Alias, + Target: &querypb.Target{ + Cell: cell, + Keyspace: ks, + Shard: shard, + TabletType: topodatapb.TabletType_PRIMARY, + }, + PrimaryTermStartTimestamp: time.Now().Unix(), + RealtimeStats: &querypb.RealtimeStats{}, + }, + wantErr: fmt.Sprintf("tablet %s type has changed from %s to %s", + tabletAlias, tabletType, topodatapb.TabletType_PRIMARY.String()), + }, + { + name: "unhealthy", + hcRes: &querypb.StreamHealthResponse{ + TabletAlias: source.Tablet().Alias, + Target: target, + RealtimeStats: &querypb.RealtimeStats{ + HealthError: "unhealthy", + }, + }, + wantErr: fmt.Sprintf("tablet %s is no longer healthy", tabletAlias), + }, + { + name: "replication lag too high", + hcRes: &querypb.StreamHealthResponse{ + TabletAlias: source.Tablet().Alias, + Target: target, + RealtimeStats: &querypb.RealtimeStats{ + ReplicationLagSeconds: highLag, + }, + }, + wantErr: fmt.Sprintf("%s has a replication lag of %d seconds which is beyond the value provided", + tabletAlias, highLag), + }, + } + + for _, tc := range testcases { + t.Run(tc.name, func(t *testing.T) { + if tc.wantErr != "" { + source.SetStreamHealthResponse(tc.hcRes) + } + + vstreamCtx, vstreamCancel := context.WithTimeout(ctx, 5*time.Second) + defer vstreamCancel() + + // SandboxConn's VStream implementation always waits for the context to timeout. + err := vsm.VStream(vstreamCtx, tabletType, vgtid, nil, nil, func(events []*binlogdatapb.VEvent) error { + return fmt.Errorf("unexpected events: %v", events) + }) + + if tc.wantErr != "" { + require.Error(t, err) + require.Contains(t, logger.String(), tc.wantErr) + } else { + // Otherwise we simply expect the context to timeout + require.Error(t, err) + require.ErrorIs(t, vterrors.UnwrapAll(err), context.DeadlineExceeded) + } + + logger.Clear() }) - }() - return ch + } } -func verifyEvents(t *testing.T, ch <-chan *binlogdatapb.VStreamResponse, wants ...*binlogdatapb.VStreamResponse) { - t.Helper() - for i, want := range wants { - val := <-ch - got := val.CloneVT() - require.NotNil(t, got) - for _, event := range got.Events { - event.Timestamp = 0 - } - if !proto.Equal(got, want) { - t.Errorf("vstream(%d):\n%v, want\n%v", i, got, want) - } - } +func newTestVStreamManager(ctx context.Context, hc discovery.HealthCheck, serv srvtopo.Server, cell string) *vstreamManager { + gw := NewTabletGateway(ctx, hc, serv, cell) + srvResolver := srvtopo.NewResolver(serv, gw, cell) + return newVStreamManager(srvResolver, serv, cell) } func getVEvents(keyspace, shard string, count, idx int64) []*binlogdatapb.VEvent { diff --git a/proto/vtgate.proto b/proto/vtgate.proto index b97df69525c..35b068c4616 100644 --- a/proto/vtgate.proto +++ b/proto/vtgate.proto @@ -311,6 +311,12 @@ message VStreamFlags { repeated string tables_to_copy = 9; // Exclude the keyspace from the table name that is sent to the vstream client bool exclude_keyspace_from_table_name = 10; + // Transaction chunk threshold in bytes. When a transaction exceeds this size, + // VTGate will acquire a lock to ensure contiguous, non-interleaved delivery + // (BEGIN...ROW...COMMIT sent sequentially without mixing events from other shards). + // Events are still chunked to prevent OOM. Transactions smaller than this are sent + // without locking for better parallelism. + int64 transaction_chunk_size = 11; } // VStreamRequest is the payload for VStream. From cbfe48a08a751e8eb5ae43e692e98745af8214c2 Mon Sep 17 00:00:00 2001 From: twthorn Date: Thu, 11 Dec 2025 10:36:56 -0300 Subject: [PATCH 2/4] Fix static code checks Signed-off-by: twthorn --- go/test/endtoend/vreplication/vreplication_test.go | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/go/test/endtoend/vreplication/vreplication_test.go b/go/test/endtoend/vreplication/vreplication_test.go index df77eeeac9a..36d54960acf 100644 --- a/go/test/endtoend/vreplication/vreplication_test.go +++ b/go/test/endtoend/vreplication/vreplication_test.go @@ -55,11 +55,17 @@ var ( defaultReplicas int sourceKsOpts = make(map[string]string) targetKsOpts = make(map[string]string) + defaultTargetKsOpts = make(map[string]string) httpClient = throttlebase.SetupHTTPClient(time.Second) sourceThrottlerAppName = throttlerapp.VStreamerName targetThrottlerAppName = throttlerapp.VReplicationName ) +const ( + defaultSourceKs = "product" + defaultTargetKs = "customer" +) + const ( // for some tests we keep an open transaction during a Switch writes and commit it afterwards, to reproduce https://github.com/vitessio/vitess/issues/9400 // we also then delete the extra row (if) added so that the row counts for the future count comparisons stay the same From 45609f9a58dd728279e4f898b209177c8f31ca8f Mon Sep 17 00:00:00 2001 From: twthorn Date: Thu, 11 Dec 2025 11:50:59 -0300 Subject: [PATCH 3/4] Remove utils import Signed-off-by: twthorn --- go/test/endtoend/vreplication/vstream_test.go | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/go/test/endtoend/vreplication/vstream_test.go b/go/test/endtoend/vreplication/vstream_test.go index 1f83dd0925a..592600ceaa1 100644 --- a/go/test/endtoend/vreplication/vstream_test.go +++ b/go/test/endtoend/vreplication/vstream_test.go @@ -31,7 +31,6 @@ import ( "vitess.io/vitess/go/sets" "vitess.io/vitess/go/vt/log" - "vitess.io/vitess/go/vt/utils" _ "vitess.io/vitess/go/vt/vtgate/grpcvtgateconn" "vitess.io/vitess/go/vt/vtgate/vtgateconn" @@ -1127,7 +1126,7 @@ func TestVStreamStopOnReshardFalse(t *testing.T) { func TestVStreamWithKeyspacesToWatch(t *testing.T) { extraVTGateArgs = append(extraVTGateArgs, []string{ - utils.GetFlagVariantForTests("--keyspaces-to-watch"), defaultSourceKs, + "--keyspaces-to-watch", defaultSourceKs, }...) testVStreamWithFailover(t, false) @@ -1222,9 +1221,9 @@ func doVStream(t *testing.T, vc *VitessCluster, flags *vtgatepb.VStreamFlags) (n func TestVStreamHeartbeats(t *testing.T) { // Enable continuous heartbeats. extraVTTabletArgs = append(extraVTTabletArgs, - utils.GetFlagVariantForTests("--heartbeat-enable"), - utils.GetFlagVariantForTests("--heartbeat-interval"), "1s", - utils.GetFlagVariantForTests("--heartbeat-on-demand-duration"), "0", + "--heartbeat-enable", + "--heartbeat-interval", "1s", + "--heartbeat-on-demand-duration", "0", ) setSidecarDBName("_vt") config := *mainClusterConfig From 26fa43d4210da0b429370fe55e5cac9e67860e06 Mon Sep 17 00:00:00 2001 From: twthorn Date: Thu, 11 Dec 2025 14:34:40 -0300 Subject: [PATCH 4/4] Fix keyspaces to watch test Signed-off-by: twthorn --- go/test/endtoend/vreplication/vstream_test.go | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/go/test/endtoend/vreplication/vstream_test.go b/go/test/endtoend/vreplication/vstream_test.go index 592600ceaa1..c5fc155624e 100644 --- a/go/test/endtoend/vreplication/vstream_test.go +++ b/go/test/endtoend/vreplication/vstream_test.go @@ -1126,7 +1126,7 @@ func TestVStreamStopOnReshardFalse(t *testing.T) { func TestVStreamWithKeyspacesToWatch(t *testing.T) { extraVTGateArgs = append(extraVTGateArgs, []string{ - "--keyspaces-to-watch", defaultSourceKs, + "--keyspaces_to_watch", defaultSourceKs, }...) testVStreamWithFailover(t, false)