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https://issues.apache.org/jira/browse/YARN-3359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15485242#comment-15485242
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Vinod Kumar Vavilapalli commented on YARN-3359:
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bq. Right now each collector is mapped with an app ID, but to handle the state
recover case, we need to associate each collector with an attempt ID (and
ideally a time stamp to further distinguish collectors).
+1 in general. We can simply have the RM generate a collector-id to be
(app-attempt-ID + another ID identifying the collector). RM *has* to know about
collectors for scheduling later when the collector runs in its own container,
so letting it generate the IDs is reasonable.
> Recover collector list in RM failed over
> ----------------------------------------
>
> Key: YARN-3359
> URL: https://issues.apache.org/jira/browse/YARN-3359
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Junping Du
> Assignee: Li Lu
> Labels: YARN-5355
>
> Per discussion in YARN-3039, split the recover work from RMStateStore in a
> separated JIRA.
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