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https://issues.apache.org/jira/browse/STORM-660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14311676#comment-14311676
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P. Taylor Goetz commented on STORM-660:
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I'm not sure I would call this a bug. Synchronizing access to non-threadsafe
objects is standard practice in multithreaded code.
> IndexOutOfBoundsException with shuffle grouping and a large number of
> paralleliziation hint
> ---------------------------------------------------------------------------------------------
>
> Key: STORM-660
> URL: https://issues.apache.org/jira/browse/STORM-660
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 0.10.0
> Environment: Linux
> Reporter: clay teahouse
>
> Storm throws IndexOutOfBoundsException error once in a while, when a bolt
> with shuffle grouping to is linked its predecessor bolt.especially with a
> high paralleliziation hint.
> This was reported as a bug with the previous versions of storm as well.
> http://stackoverflow.com/questions/19632287/indexoutofboundsexception-in-shuffle-grouping
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