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ORCA: Fix detection of mixed storage in partitioned tables #1524

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ORCA: Fix detection of mixed storage in partitioned tables #1524

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22 changes: 20 additions & 2 deletions src/backend/gpopt/translate/CTranslatorRelcacheToDXL.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3147,18 +3147,36 @@ CTranslatorRelcacheToDXL::RetrieveStorageTypeForPartitionedTable(Relation rel)
"Queries with partitions of greenplum_fdw are not supported"));
}
GPOS_DELETE(fdw_name_str);

// Check for mixed storage before continuing
// If we already encountered non-foreign partitions, mark as mixed
if (rel_storage_type != IMDRelation::ErelstorageSentinel &&
rel_storage_type != IMDRelation::ErelstorageForeign)
{
// Already have non-foreign partition(s), now found foreign → mixed
rel_storage_type = IMDRelation::ErelstorageMixedPartitioned;
}
else if (rel_storage_type == IMDRelation::ErelstorageSentinel)
{
// First partition is foreign
rel_storage_type = IMDRelation::ErelstorageForeign;
}
continue;
}
all_foreign = false;
if (rel_storage_type == IMDRelation::ErelstorageSentinel)
{
rel_storage_type = child_storage;
}

else if (rel_storage_type == IMDRelation::ErelstorageForeign)
{
// Previously had foreign partition(s), now found non-foreign → mixed
rel_storage_type = IMDRelation::ErelstorageMixedPartitioned;
}
// mark any partitioned table with supported partitions of mixed storage types,
// this is more conservative for certain skans (eg: we can't do an index scan if any
// partition is ao, we must only do a sequential or bitmap scan)
if (rel_storage_type != child_storage)
else if (rel_storage_type != child_storage)
{
rel_storage_type = IMDRelation::ErelstorageMixedPartitioned;
}
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