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https://issues.apache.org/jira/browse/MAPREDUCE-6929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16111724#comment-16111724
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Vrushali C commented on MAPREDUCE-6929:
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Hmm, so the NMs did not have timeline collector as an auxiliary service but the
AM was trying to connect to timeline service? It should retry for a few times
(30 I think by default) and then just "complete". Do you have any logs?
> TimelineClient hangs MR AM
> --------------------------
>
> Key: MAPREDUCE-6929
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6929
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mr-am
> Reporter: Haibo Chen
>
> I happened to misconfigure ATSv2 settings, that is, I enabled emitting to
> ATSv2 in MR and did not start YARN with ATSv2. The job was stuck after it
> finished all its work.
> Noticed that in MRAppMaster, TimelineClient is never added as a service,
> which I think is why the AM was hanging.
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