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Posted to dev@storm.apache.org by "Abhishek Agarwal (JIRA)" <ji...@apache.org> on 2015/09/08 09:55:46 UTC
[jira] [Assigned] (STORM-1027) Topology may hang because
metric-tick function is a blocking call from spout
[ https://issues.apache.org/jira/browse/STORM-1027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Abhishek Agarwal reassigned STORM-1027:
---------------------------------------
Assignee: Abhishek Agarwal
> 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
> Affects Versions: 0.10.0
> Reporter: Abhishek Agarwal
> Assignee: Abhishek Agarwal
> Priority: Critical
>
> 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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