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https://issues.apache.org/jira/browse/YARN-8521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16575628#comment-16575628
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Hudson commented on YARN-8521:
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SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14744 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14744/])
YARN-8521. NPE in AllocationTagsManager when a container is removed more (wwei:
rev 08d5060605af81a3d6048044176dc656c0dad56c)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/TestPlacementConstraintsUtil.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/TestAllocationTagsManager.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/constraint/AllocationTagsManager.java
> NPE in AllocationTagsManager when a container is removed more than once
> -----------------------------------------------------------------------
>
> Key: YARN-8521
> URL: https://issues.apache.org/jira/browse/YARN-8521
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 3.1.0
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Priority: Major
> Fix For: 3.2.0, 3.1.2
>
> Attachments: YARN-8521.001.patch, YARN-8521.002.patch,
> YARN-8521.003.patch
>
>
> We've seen sometimes there is NPE in AllocationTagsManager
> {code:java}
> private void removeTagFromInnerMap(Map<String, Long> innerMap, String tag) {
> Long count = innerMap.get(tag);
> if (count > 1) { // NPE!!
> ...
> {code}
> it seems {{AllocationTagsManager#removeContainer}} somehow gets called more
> than once for a same container.
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