replaced long jobName with unique jobExecutionId

Author: pratapaditya04

gobblin-service/src/main/java/org/apache/gobblin/service/modules/spec/JobExecutionPlan.java

@@ -111,8 +111,6 @@ private static JobSpec buildJobSpec(FlowSpec flowSpec, Config jobConfig, Long fl
       String flowName = ConfigUtils.getString(flowConfig, ConfigurationKeys.FLOW_NAME_KEY, "");
       String flowGroup = ConfigUtils.getString(flowConfig, ConfigurationKeys.FLOW_GROUP_KEY, "");
       String flowFailureOption = ConfigUtils.getString(flowConfig, ConfigurationKeys.FLOW_FAILURE_OPTION, DagProcessingEngine.DEFAULT_FLOW_FAILURE_OPTION);
-      String flowInputPath = ConfigUtils.getString(flowConfig, DatasetDescriptorConfigKeys.FLOW_INPUT_DATASET_DESCRIPTOR_PREFIX
-          + "." + DatasetDescriptorConfigKeys.PATH_KEY, "");
       Long flowModTime = ConfigUtils.getLong(flowConfig, FlowSpec.MODIFICATION_TIME_KEY, 0L);
 
       String jobName = ConfigUtils.getString(jobConfig, ConfigurationKeys.JOB_NAME_KEY, "");
@@ -121,15 +119,9 @@ private static JobSpec buildJobSpec(FlowSpec flowSpec, Config jobConfig, Long fl
       final int gaasJobExecutionIdHash = gaasJobExecutionId.hashCode();  // Passing the hashCode of the uniqueIdentifier to be used as jobExecutionId for backward compatibility
 
       if (!ConfigUtils.getBoolean(jobConfig, JOB_MAINTAIN_JOBNAME, false) || jobName.isEmpty()) {
-        // Modify the job name to include the flow group, flow name, edge id, and a random string to avoid collisions since
-        // job names are assumed to be unique within a dag.
-        int hash = flowInputPath.hashCode();
-        jobName = Joiner.on(JOB_NAME_COMPONENT_SEPARATION_CHAR).join(flowGroup, flowName, jobName, edgeId, hash);
-        // jobNames are commonly used as a directory name, which is limited to 255 characters
-        if (jobName.length() >= MAX_JOB_NAME_LENGTH) {
-          // shorten job length to be 128 characters (flowGroup) + (hashed) flowName, hashCode length
-          jobName = Joiner.on(JOB_NAME_COMPONENT_SEPARATION_CHAR).join(flowGroup, flowName.hashCode(), hash);
-        }
+        jobName = gaasJobExecutionId; // Assigning jobName with the value of GaaSJobExecutionId
+        // which is a UUID and unique to avoid collisions
+
       }
       JobSpec.Builder jobSpecBuilder = JobSpec.builder(jobSpecURIGenerator(flowGroup, jobName, flowSpec)).withConfig(jobConfig)
           .withDescription(flowSpec.getDescription()).withVersion(flowSpec.getVersion());