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https://issues.apache.org/jira/browse/IMPALA-12146?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Smith resolved IMPALA-12146.
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Fix Version/s: Impala 4.5.0
Target Version: Impala 4.4.2
Resolution: Fixed
> Memory reserved doesn't get updated if an executor backend gets abnormally
> terminated
> -------------------------------------------------------------------------------------
>
> Key: IMPALA-12146
> URL: https://issues.apache.org/jira/browse/IMPALA-12146
> Project: IMPALA
> Issue Type: Bug
> Reporter: Abhishek Rawat
> Assignee: Yida Wu
> Priority: Critical
> Fix For: Impala 4.5.0
>
>
> If an executor backend is abnormally terminated its memory reserved
> accounting doesn't get updated and as a result the admission controller gets
> an incorrect view of the reserved memory for that particular backend. The
> side effect is that even if the abnormally terminated executor is restarted
> and added to the cluster, its reserved memory is still incorrectly set to the
> value before termination.
> Repro:
> * Execute a long running query
> * Kill one of the Impalads which is an executor only backend while the query
> is running.
> * Restart the executor backend which was abnormally terminated above
> * On the web ui go to the /backends page and the 'Memory Reserved' for the
> executor backend would be non zero
> * Even if the session is closed the 'Memory Reserved' for the executor
> backend remains non zero.
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