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https://issues.apache.org/jira/browse/APEXCORE-362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vlad Rozov updated APEXCORE-362:
--------------------------------
Description:
There is a possible race condition while end window statistics is calculated by
application master. While putIfAbsent() and get() are atomic and thread-safe by
itself, there is a possibility of thread switch in between, so that entry
inserted by putIfAbasent will be removed and get may return null.
was:There is a possible race condition while end window statistics is
calculated by application master. While putIfAbsent() and get() are atomic and
thread safe by itself, there is a possibility of thread switch in between, so
that entry inserted by putIfAbasent will be removed and get may return null.
> NPE in StreamingContainerManager
> --------------------------------
>
> Key: APEXCORE-362
> URL: https://issues.apache.org/jira/browse/APEXCORE-362
> Project: Apache Apex Core
> Issue Type: Bug
> Affects Versions: 3.2.0, 3.3.0, 3.2.1, 3.4.0, 3.3.1
> Reporter: Vlad Rozov
> Assignee: Vlad Rozov
>
> There is a possible race condition while end window statistics is calculated
> by application master. While putIfAbsent() and get() are atomic and
> thread-safe by itself, there is a possibility of thread switch in between, so
> that entry inserted by putIfAbasent will be removed and get may return null.
>
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