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https://issues.apache.org/jira/browse/YARN-6031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15784929#comment-15784929
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Ying Zhang commented on YARN-6031:
----------------------------------
It makes sense to me.
{quote}
If we skip and continue, then we will be loosing the record of that app from RM
end (It will be there in Store still). We may be pushing detail information to
logs, but user/admin need not have to take a look in logs as recovery went
smooth (discarding few apps).
{quote}
Yes, that's true, those app doesn't show up in the application list in RM UI
after recovery. Just information in log saying what's going on.
> Application recovery failed after disabling node label
> ------------------------------------------------------
>
> Key: YARN-6031
> URL: https://issues.apache.org/jira/browse/YARN-6031
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Affects Versions: 2.8.0
> Reporter: Ying Zhang
> Assignee: Ying Zhang
> Priority: Minor
> Attachments: YARN-6031.001.patch
>
>
> Here is the repro steps:
> Enable node label, restart RM, configure CS properly, and run some jobs;
> Disable node label, restart RM, and the following exception thrown:
> {noformat}
> Caused by:
> org.apache.hadoop.yarn.exceptions.InvalidLabelResourceRequestException:
> Invalid resource request, node label not enabled but request contains label
> expression
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerUtils.normalizeAndValidateRequest(SchedulerUtils.java:225)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerUtils.normalizeAndValidateRequest(SchedulerUtils.java:248)
> at
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.validateAndCreateResourceRequest(RMAppManager.java:394)
> at
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.createAndPopulateNewRMApp(RMAppManager.java:339)
> at
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recoverApplication(RMAppManager.java:319)
> at
> org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recover(RMAppManager.java:436)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.recover(ResourceManager.java:1165)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:574)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> ... 10 more
> {noformat}
> During RM restart, application recovery failed due to that application had
> node label expression specified while node label has been disabled.
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