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Posted to issues@yunikorn.apache.org by "Weiwei Yang (Jira)" <ji...@apache.org> on 2022/05/18 21:03:00 UTC

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

Weiwei Yang created YUNIKORN-1218:
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             Summary: 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


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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