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Posted to issues@yunikorn.apache.org by "Weiwei Yang (Jira)" <ji...@apache.org> on 2022/05/18 21:28:00 UTC

[jira] [Commented] (YUNIKORN-1218) Scheduler crashed with concurrent map access error in health checker

    [ https://issues.apache.org/jira/browse/YUNIKORN-1218?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17539093#comment-17539093 ] 

Weiwei Yang commented on YUNIKORN-1218:
---------------------------------------

Thanks a lot for the quick review and merge [~ccondit]. 

> Scheduler crashed with concurrent map access error in health checker
> --------------------------------------------------------------------
>
>                 Key: YUNIKORN-1218
>                 URL: https://issues.apache.org/jira/browse/YUNIKORN-1218
>             Project: Apache YuniKorn
>          Issue Type: Bug
>          Components: core - scheduler
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.1.0
>
>         Attachments: reproduce.patch, stacktrace.log
>
>
> After YUNIKORN-1107, the health checker runs as a background thread in 30s interval. We observed a few scheduler restarts in the past week that seems to be caused by this thread, because it has an unsafe access to the partition context without proper read lock. I have uploaded a patch to reproduce this locally, and a file of the stack trace when crash happens. 



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