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https://issues.apache.org/jira/browse/STORM-737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14542836#comment-14542836
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Jungtaek Lim commented on STORM-737:
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Please ignore this comment. I'll try other approach and talk it later.
> Workers may try to send to closed connections
> ---------------------------------------------
>
> Key: STORM-737
> URL: https://issues.apache.org/jira/browse/STORM-737
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 0.9.2-incubating
> Reporter: Derek Dagit
>
> There is a race condition in the worker code that can allow for a send() to
> be called on a closed connection.
> [Discussion|https://github.com/apache/storm/pull/349#issuecomment-87778672]
> The assignment mapping from task -> node+port needs to be read and used in
> the read lock when sending, so that an accurate mapping is used that does not
> include any connections that are closed.
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