[jira] [Created] (FALCON-2107) NPE in FalconWorkflowEngine::isActive() method when FalconJPAService is not used

["Balu Vellanki (JIRA)" <ji...@apache.org>]

Balu Vellanki created FALCON-2107:
-------------------------------------

             Summary: NPE in FalconWorkflowEngine::isActive() method when FalconJPAService is not used
                 Key: FALCON-2107
                 URL: https://issues.apache.org/jira/browse/FALCON-2107
             Project: Falcon
          Issue Type: Bug
    Affects Versions: 0.10
            Reporter: Balu Vellanki
            Assignee: Balu Vellanki
            Priority: Blocker
             Fix For: 0.10


When attempting any schedulable entity actions, Falcon is attempting to do getNativeWorkflowEngine().isActive(entity)  -- which throws an NPE when FalconJPAService is not enabled in startup.properties. 
{code}
falcon:DELETE//entities/delete/process/rawEmailIngestProcess] ~ Unable to reach workflow engine for deletion or deletion failed (AbstractEntityManager:287)
java.lang.NullPointerException
       at org.apache.falcon.service.FalconJPAService.getEntityManager(FalconJPAService.java:168)
       at org.apache.falcon.state.store.jdbc.JDBCStateStore.getEntityManager(JDBCStateStore.java:495)
       at org.apache.falcon.state.store.jdbc.JDBCStateStore.getEntityBean(JDBCStateStore.java:113)
       at org.apache.falcon.state.store.jdbc.JDBCStateStore.getEntityByKey(JDBCStateStore.java:101)
       at org.apache.falcon.state.store.jdbc.JDBCStateStore.entityExists(JDBCStateStore.java:126)
       at org.apache.falcon.workflow.engine.FalconWorkflowEngine.isActive(FalconWorkflowEngine.java:113)
       at org.apache.falcon.workflow.WorkflowEngineFactory.getWorkflowEngine(WorkflowEngineFactory.java:54)
       at org.apache.falcon.resource.AbstractEntityManager.getWorkflowEngine(AbstractEntityManager.java:1325)
       at org.apache.falcon.resource.AbstractEntityManager.delete(AbstractEntityManager.java:274)
       at org.apache.falcon.resource.AbstractEntityManager.delete(AbstractEntityManager.java:257)
{code}

Confirmed with [~pallavi.rao] that the optimal solution is to catch NPE and return false in the isActive(...) method.



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