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https://issues.apache.org/jira/browse/STORM-1027?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14973879#comment-14973879
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ASF GitHub Bot commented on STORM-1027:
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Github user abhishekagarwal87 commented on the pull request:
https://github.com/apache/storm/pull/818#issuecomment-151053131
This PR is to backport STORM-1027 into 0.9.x branch. @HeartSaVioR can you
merge this?
> Topology may hang because metric-tick function is a blocking call from spout
> ----------------------------------------------------------------------------
>
> Key: STORM-1027
> URL: https://issues.apache.org/jira/browse/STORM-1027
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-core
> Affects Versions: 0.10.0
> Reporter: Abhishek Agarwal
> Assignee: Abhishek Agarwal
> Priority: Critical
> Fix For: 0.10.0
>
>
> Nathan had fixed the dining philosopher problem by putting a overflow buffer
> in the spout so that spout is not blocking. However, overflow buffer is not
> used when emitting the metric, and that could result in the deadlock. I
> modified the executor to use overflow buffer for emitting metrics and
> afterwards topology didn't hang.
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