[jira] [Created] (UIMA-3365) DUCC job driver (JD) ERROR client.WorkItemListener onBeforeProcessCASHandler N/A seqNo:null casId:1602519189 java.lang.NullPointerException

["Lou DeGenaro (JIRA)" <de...@uima.apache.org>]

Lou DeGenaro created UIMA-3365:
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             Summary: DUCC job driver (JD) ERROR client.WorkItemListener onBeforeProcessCASHandler     N/A seqNo:null casId:1602519189 java.lang.NullPointerException
                 Key: UIMA-3365
                 URL: https://issues.apache.org/jira/browse/UIMA-3365
             Project: UIMA
          Issue Type: Bug
          Components: DUCC
            Reporter: Lou DeGenaro
            Assignee: Lou DeGenaro
            Priority: Minor
             Fix For: 1.0-Ducc


Job 93735.

It seems that the first callback expected by JD for work item 659 comes.  However the second callback does not arrive within 60 seconds, so the work items is reaped.  Then, 2 seconds later the missing callback finally (and unexpectedly) arrives causing the NPE in JD.

The Job seems to actually run to completion, but is flagged with lost work items.  This makes sense, since if the JP does get the work item it will process it.  However, the JD will begin queuing "extra" work items since it does not understand that such work items are not really lost.  This may increasingly aggravate the problem by having the JD put out to queue more work items than the present JP capacity can handle.



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