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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