[ 
https://issues.apache.org/jira/browse/GOBBLIN-2061?focusedWorklogId=917629&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-917629
 ]

ASF GitHub Bot logged work on GOBBLIN-2061:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 04/May/24 20:11
            Start Date: 04/May/24 20:11
    Worklog Time Spent: 10m 
      Work Description: phet commented on code in PR #3943:
URL: https://github.com/apache/gobblin/pull/3943#discussion_r1590116456


##########
gobblin-service/src/main/java/org/apache/gobblin/service/modules/core/GobblinServiceManager.java:
##########
@@ -382,7 +387,11 @@ private void registerServicesInLauncher(){
       }
     }
 
-    this.serviceLauncher.addService(dagManager);
+    if (configuration.isDagProcessingEngineEnabled()) {

Review Comment:
   yay - we already have the config to make this optional!



##########
gobblin-service/src/main/java/org/apache/gobblin/service/modules/orchestration/proc/LaunchDagProc.java:
##########
@@ -63,8 +63,12 @@ protected Optional<Dag<JobExecutionPlan>> 
initialize(DagManagementStateStore dag
     try {
       FlowSpec flowSpec = 
dagManagementStateStore.getFlowSpec(FlowSpec.Utils.createFlowSpecUri(getDagId().getFlowId()));
       flowSpec.addProperty(ConfigurationKeys.FLOW_EXECUTION_ID_KEY, 
getDagId().getFlowExecutionId());
-      return 
this.flowCompilationValidationHelper.createExecutionPlanIfValid(flowSpec).toJavaUtil();
-    } catch (URISyntaxException | SpecNotFoundException | InterruptedException 
e) {
+      Optional<Dag<JobExecutionPlan>> dag = 
this.flowCompilationValidationHelper.createExecutionPlanIfValid(flowSpec).toJavaUtil();
+      if (dag.isPresent()) {
+        dagManagementStateStore.checkpointDag(dag.get());
+      }
+      return dag;

Review Comment:
   it should just return `Optional.empty`, which `act` checks for just below
   
   YMMV, but I find [this 
approach](https://github.com/apache/gobblin/pull/3942#discussion_r1589492017) 
to be a clearer signal that an alt. handling path was not missed





Issue Time Tracking
-------------------

    Worklog Id:     (was: 917629)
    Time Spent: 40m  (was: 0.5h)

> Fix initialization of DagProcessingEngine
> -----------------------------------------
>
>                 Key: GOBBLIN-2061
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-2061
>             Project: Apache Gobblin
>          Issue Type: Bug
>          Components: gobblin-service
>            Reporter: Urmi Mustafi
>            Assignee: Abhishek Tiwari
>            Priority: Major
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> * Initialize DagProcessingEngine with right parameters 
>  * Add DagProcessingEngine to GobblinServiceManager
>  * Add logging to DagProcessingEngine instantiation and Threads
>  * Fix instantiation of QuartzScheduler for DagActionReminderScheduler
>  * Fix DagAction type retrieval from Quartz reminder job detail map
>  *  



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