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https://issues.apache.org/jira/browse/YARN-9237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16754539#comment-16754539
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Hudson commented on YARN-9237:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #15842 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/15842/])
YARN-9237. NM should ignore sending finished apps to RM during RM (wwei: rev
4f63ffe444286dac91ed36fd647d8ce69e75b0f0)
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/NodeStatusUpdaterImpl.java
> NM should ignore sending finished apps to RM during RM fail-over
> ----------------------------------------------------------------
>
> Key: YARN-9237
> URL: https://issues.apache.org/jira/browse/YARN-9237
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Reporter: Jiandan Yang
> Assignee: Jiandan Yang
> Priority: Major
> Attachments: YARN-9237.001.patch, YARN-9237.002.patch
>
>
> I found a lot of following log in active RM log file after doing failover RM
> {code:java}
> 2019-01-24 15:43:58,999 WARN
> org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNodeImpl: Cannot get
> RMApp by appId=application_1542178952162_34746156, just added it to
> finishedApplications list for cleanup
> .....
> {code}
> I looked forward RM logs and find this app had finished before hours
> {code:java}
> 2019-01-23 21:49:55,683 INFO
> org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl:
> appattempt_1542178952162_34746156_000001 State change from FINAL_SAVING to
> FINISHING
> {code}
> The reason of RM prints " Cannot get RMApp by appId" is as follows:
> 1. RM failover
> 2. NM reports all running apps to RM in register request
> 3. The running apps are from NMContext, some apps may already finished
> 4. In my cluster, yarn.log-aggregation-enable=false,
> yarn.nodemanager.log.retain-seconds=86400(1day), so app is kept in NMContext
> before app has finished for 24 hours
> 5. My Yarn cluster runs 50k apps per day and 7k nodes, and NM will report
> many finished apps to RM.
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