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https://issues.apache.org/jira/browse/STORM-2779?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated STORM-2779:
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Labels: pull-request-available (was: )
> NPE on shutting down WindowedBoltExecutor
> -----------------------------------------
>
> Key: STORM-2779
> URL: https://issues.apache.org/jira/browse/STORM-2779
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-client
> Affects Versions: 2.0.0, 1.2.0, 1.1.2
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Labels: pull-request-available
>
> STORM-2724 introduced a bug on WindowedBoltExecutor which throws NPE when
> shutting down WindowedBoltExecutor which has waterMarkEventGenerator field as
> null.
> https://github.com/apache/storm/blob/master/storm-client/src/jvm/org/apache/storm/topology/WindowedBoltExecutor.java#L330
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