[jira] [Created] (UIMA-4896) UIMA-DUCC: instrument JP to log more details on negative performance metrics

["Jerry Cwiklik (JIRA)" <de...@uima.apache.org>]

Jerry Cwiklik created UIMA-4896:
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             Summary: UIMA-DUCC: instrument JP to log more details on negative performance metrics 
                 Key: UIMA-4896
                 URL: https://issues.apache.org/jira/browse/UIMA-4896
             Project: UIMA
          Issue Type: Bug
          Components: DUCC
            Reporter: Jerry Cwiklik
            Assignee: Jerry Cwiklik
             Fix For: 2.1.0-Ducc


Detect negative value for analysis time in UimaProcessContainer.doProcess() and log more details. Performance breakdown for one job showed negative analysis time. This was only observed and reported once. The hypothesis is that the JP provided bad data to the JD. Need proof that this is indeed the case. 
The JP code computes per CAS analysis time by doing before AE.process() and after snapshots and than computing delta essentially:
after.analysisTime() - before.analysisTime. The uima-core analysisTime is cumulative and increasing each time process is called. In theory the delta should always be > 0. 



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