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https://issues.apache.org/jira/browse/YARN-10300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17124421#comment-17124421
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Jim Brennan commented on YARN-10300:
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[~ebadger] can you explain under what circumstances
{{attempt.getMasterContainer().getNodeId().getHost()}} will succeed where
{{attempt.getHost()}} fails?
Also, do we need to add some null checks for these? getMasterContainer(),
getNodeId(), getHost()?
Note that the attempt.getHost() defaults to "N/A" before it is set - what do we
get if NodeID().getHost() isn't valid yet? Is that even a possibility?
> appMasterHost not set in RM ApplicationSummary when AM fails before first
> heartbeat
> -----------------------------------------------------------------------------------
>
> Key: YARN-10300
> URL: https://issues.apache.org/jira/browse/YARN-10300
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Eric Badger
> Assignee: Eric Badger
> Priority: Major
> Attachments: YARN-10300.001.patch
>
>
> {noformat}
> 2020-05-23 14:09:10,086 INFO resourcemanager.RMAppManager$ApplicationSummary:
> appId=application_1586003420099_12444961,name=job_name,user=username,queue=queuename,state=FAILED,trackingUrl=https
>
> ://cluster:port/applicationhistory/app/application_1586003420099_12444961,appMasterHost=N/A,startTime=1590241207309,finishTime=1590242950085,finalStatus=FAILED,memorySeconds=13750,vcoreSeconds=67,preemptedMemorySeconds=0,preemptedVcoreSeconds=0,preemptedAMContainers=0,preemptedNonAMContainers=0,preemptedResources=<memory:0\,
> vCores:0>,applicationType=MAPREDUCE
> {noformat}
> {{appMasterHost=N/A}} should have the AM hostname instead of N/A
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