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Posted to dev@uima.apache.org by "Jerry Cwiklik (JIRA)" <de...@uima.apache.org> on 2014/02/20 22:12:19 UTC

[jira] [Created] (UIMA-3644) UIMA-AS parallel processing is broken

Jerry Cwiklik created UIMA-3644:
-----------------------------------

             Summary: UIMA-AS parallel processing is broken
                 Key: UIMA-3644
                 URL: https://issues.apache.org/jira/browse/UIMA-3644
             Project: UIMA
          Issue Type: Bug
          Components: Async Scaleout
    Affects Versions: 2.4.2AS
            Reporter: Jerry Cwiklik
            Assignee: Jerry Cwiklik
             Fix For: 2.5.0AS


It appears that the parallel step involving fast AEs is broken. The UIMA-AS  logs "preexisting FS encountered but not allowed ".

A user explains the problem as follows:

"The exception happens randomly. It happens when UIMA gets a response from one of the parallel annotators before it is done sending the request to all parallel annotators. 
  
à request goes to annotator 1 
à request goes to annotator 2 
ß response comes from annotator 1 
à request goes to annotator 3 (CAS sent to annotator 3 is messed up, it includes stuff received from annotator 1) 
… 
ß response comes from annotator3 -à bogus exception: preexisting FS encountered but not allowed "

This probably needs a new junit test case before a fix is made. 




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