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https://issues.apache.org/jira/browse/YARN-8865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16676864#comment-16676864
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Hudson commented on YARN-8865:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #15370 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/15370/])
YARN-8865. RMStateStore contains large number of expired (jlowe: rev
ab6aa4c7265db5bcbb446c2f779289023d454b81)
* (edit)
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/AbstractDelegationTokenSecretManager.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/TestJHSDelegationTokenSecretManager.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/security/TestRMDelegationTokens.java
> RMStateStore contains large number of expired RMDelegationToken
> ---------------------------------------------------------------
>
> Key: YARN-8865
> URL: https://issues.apache.org/jira/browse/YARN-8865
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Affects Versions: 3.1.0
> Reporter: Wilfred Spiegelenburg
> Assignee: Wilfred Spiegelenburg
> Priority: Major
> Attachments: YARN-8865.001.patch, YARN-8865.002.patch,
> YARN-8865.003.patch, YARN-8865.004.patch, YARN-8865.005.patch,
> YARN-8865.006.patch
>
>
> When the RM state store is restored expired delegation tokens are restored
> and added to the system. These expired tokens do not get cleaned up or
> removed. The exact reason why the tokens are still in the store is not clear.
> We have seen as many as 250,000 tokens in the store some of which were 2
> years old.
> This has two side effects:
> * for the zookeeper store this leads to a jute buffer exhaustion issue and
> prevents the RM from becoming active.
> * restore takes longer than needed and heap usage is higher than it should be
> We should not restore already expired tokens since they cannot be renewed or
> used.
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