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From "Fernando (JIRA)" <>
Subject [jira] Updated: (OPENJPA-825) slices: hangs with multithreaded true
Date Tue, 16 Dec 2008 23:12:44 GMT


Fernando updated OPENJPA-825:

    Attachment: hang-multithread-2.jstack

another jstack of openjpa slices hanging: within the StateManager...

1) I have applied the patch from OPENJPA-826, that removes the first hang spot in QueryImpl.isUnique
    (this was the hang shown in the first stack trace I attached)

2) I have disabled the current work around to this bug applied by Pinaki
    (the work around currently turns off ParallelExecutor when Multithreaded=true)
    (I have disabled the work around to test a parallel execution, to find and fix hangs)

> slices: hangs with multithreaded true
> -------------------------------------
>                 Key: OPENJPA-825
>                 URL:
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 2.0.0
>            Reporter: Fernando
>            Assignee: Pinaki Poddar
>            Priority: Critical
>         Attachments: hang-multithread-2.jstack, hang-multithread.jstack, hang-multithread.txt
> When I turned on openjpa.Multithreaded as a possible fix for another bug, I see that
the system hangs.  Attached are going to be a log file, and jstack, showing how it system
hung on the very first query. ( it did execute a few find() operations, but those are not
executed via ParallelExecutor ).

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