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From "Chris A. Mattmann (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (OODT-203) Create a Non-Blocking threaded implementation of the Workflow Engine
Date Tue, 16 Aug 2011 04:53:27 GMT

     [ https://issues.apache.org/jira/browse/OODT-203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chris A. Mattmann reassigned OODT-203:

    Assignee: Chris A. Mattmann

> Create a Non-Blocking threaded implementation of the Workflow Engine
> --------------------------------------------------------------------
>                 Key: OODT-203
>                 URL: https://issues.apache.org/jira/browse/OODT-203
>             Project: OODT
>          Issue Type: Sub-task
>          Components: workflow manager
>         Environment: from JPL's last internal WM JIRA release
>            Reporter: David Woollard
>            Assignee: Chris A. Mattmann
>             Fix For: 0.4
> The current implementation of the threaded workflow engine uses a thread from its thread
pool for each of the workflows it creates. This can cause a problem if a significant number
of workflows submitted block waiting on preconditions to be satisfied. Each of these paused
workflows hangs on to the thread allocated from the thread pool, so workflows that could be
run are blocked by workflows waiting on preconditions if the thread pool is fully allocated.

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