Lou DeGenaro created UIMA-2591:
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Summary: Provisde ability to cancel an individual DUCC Job Process
Key: UIMA-2591
URL: https://issues.apache.org/jira/browse/UIMA-2591
Project: UIMA
Issue Type: New Feature
Reporter: Lou DeGenaro
Priority: Minor
Presently, a DUCC Job may be unable to make forward progress (including
termination) due to a Job Process [JP] that was dispatched to an Agent that is
no longer communicating. The only way to rescue this Job (without recylcing
DUCC itself) is to have the Agent start reporting again, which may not be
feasible (for example a HW problem has caused the system to crash and precludes
system boot and therefore Agent from running).
Provided here is the ability to cancel a particular JP, thus making any and all
Work Items previously dispatched to that JP re-deployable elsewhere.
The DUCC CLI is enhanced to provide the --dpid flag to the job cancel command.
Note well: if there is any possibility that the target JP is active but the
Agent is not, then this flag should not be used, so as to avoid the possibility
of the same Work Item being processed by two JPs simultaneously.
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