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Posted to dev@drill.apache.org by "Sudheesh Katkam (JIRA)" <ji...@apache.org> on 2015/05/27 00:01:17 UTC

[jira] [Created] (DRILL-3190) Invalid FragmentState transition from CANCELLATION_REQUESTED in QueryManager

Sudheesh Katkam created DRILL-3190:
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             Summary: Invalid FragmentState transition from CANCELLATION_REQUESTED in QueryManager
                 Key: DRILL-3190
                 URL: https://issues.apache.org/jira/browse/DRILL-3190
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
            Reporter: Sudheesh Katkam
            Assignee: Sudheesh Katkam
             Fix For: 1.1.0


If a fragment is cancelled as soon as it starts running, there are two state change messages that are reported to the QueryManager: transition to RUNNING and transition to CANCELLATION_REQUESTED. 

The order of receiving these messages is not guaranteed because the messages *can be* reported from different threads. The QueryManager#FragmentStateListener does not check for a transition from CANCELLATION_REQUESTED to RUNNING. This state change should not happen in FragmentData#setStatus.



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