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https://issues.apache.org/jira/browse/UIMA-5965?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16746702#comment-16746702
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Jerry Cwiklik commented on UIMA-5965:
-------------------------------------
Also, add a new JUnit test to cover the scenario where there are multiple
service types requesting tasks.
> UIMA-DUCC: pullservice client protocol handler synchronization not working
> --------------------------------------------------------------------------
>
> Key: UIMA-5965
> URL: https://issues.apache.org/jira/browse/UIMA-5965
> Project: UIMA
> Issue Type: Bug
> Components: DUCC
> Reporter: Jerry Cwiklik
> Assignee: Jerry Cwiklik
> Priority: Major
> Fix For: 2.2.3-Ducc
>
>
> The getMetaMetaTask() method synchronization is not working as expected. The
> retry loop uses java wait() which does not lock the method and allows
> multiple threads to run concurrently. Use Thread.currentThread().sleep()
> instead
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