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https://issues.apache.org/jira/browse/UIMA-3643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Cwiklik updated UIMA-3643:
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Component/s: Async Scaleout
> Bogus exception when response from parallel UIMA-AS annotator is received by
> UIMA runtime before all requests to the annotators in the parallel step are
> sent
> -------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: UIMA-3643
> URL: https://issues.apache.org/jira/browse/UIMA-3643
> Project: UIMA
> Issue Type: Bug
> Components: Async Scaleout
> Affects Versions: 2.4.0AS, 2.4.2AS
> Reporter: Guillermo Averboch
> Fix For: 2.5.0AS
>
>
> I have 3 UIMA-AS annotators in a parallel step. None of the annotators are
> modifying anything that already exists in the CAS. Most times things work
> well, but I randomly get a "preexisting FS encountered but not allowed
> exception".
> Looking at the UIMA logs (setting the log level for org.apache.uima to ALL)
> it becomes clear what's happening:
> --> request goes to annotator 1
> --> request goes to annotator 2
> <-- response received from annotator 1
> --> request goes to annotator 3 (CAS appears to contain information received
> from annotator 1)
> ...
> <-- response received from annotator 3 -- bogus "preexisting FS but not
> allowed" exception is thrown
>
> Workaround that seems to work (but which I can't really depend on) is to
> order the parallel steps from slower to faster
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