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https://issues.apache.org/jira/browse/YARN-6583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18048790#comment-18048790
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ASF GitHub Bot commented on YARN-6583:
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github-actions[bot] closed pull request #222: YARN-6583 Hadoop-sls failed to
start because of premature state of RM
URL: https://github.com/apache/hadoop/pull/222
> Hadoop-sls failed to start because of premature state of RM
> -----------------------------------------------------------
>
> Key: YARN-6583
> URL: https://issues.apache.org/jira/browse/YARN-6583
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler-load-simulator
> Affects Versions: 2.6.0
> Reporter: JayceAu
> Priority: Major
> Labels: easyfix, pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> During startup of SLS, after startRM() in SLSRunner.start(),
> BaseContainerTokenSecretManager not yet generate its onw internal key or it's
> not yet exposed to the other thread, then NM registration will fail because
> of the following exception. Finally, the whole SLS process will crash.
> {noformat}
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.security.BaseContainerTokenSecretManager.getCurrentKey(BaseContainerTokenSecretManager.java:81)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService.registerNodeManager(ResourceTrackerService.java:300)
> at
> org.apache.hadoop.yarn.sls.nodemanager.NMSimulator.init(NMSimulator.java:105)
> at org.apache.hadoop.yarn.sls.SLSRunner.startNM(SLSRunner.java:202)
> at org.apache.hadoop.yarn.sls.SLSRunner.start(SLSRunner.java:143)
> at org.apache.hadoop.yarn.sls.SLSRunner.main(SLSRunner.java:528)
> 17/05/11 10:21:06 INFO resourcemanager.ResourceManager: Recovery started
> 17/05/11 10:21:06 INFO recovery.ZKRMStateStore: Watcher event type: None with
> state:SyncConnected for path:null for Service
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore in state
> org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore: STARTED
> {noformat}
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