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https://issues.apache.org/jira/browse/IMPALA-10591?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thomas Tauber-Marshall resolved IMPALA-10591.
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Fix Version/s: Impala 4.0
Resolution: Fixed
> Fix issues with failed ReleaseQueryBackends rpc
> -----------------------------------------------
>
> Key: IMPALA-10591
> URL: https://issues.apache.org/jira/browse/IMPALA-10591
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Affects Versions: Impala 4.0
> Reporter: Thomas Tauber-Marshall
> Priority: Major
> Fix For: Impala 4.0
>
>
> Currently, if the admission control service is being used, the coordinator
> will attempt the ReleaseQueryBackends rpc up to 3 times before giving up. If
> a ReleaseQueryBackends rpc fails it can lead to resources not being released
> properly. If a subsequent ReleaseQuery rpc succeeds, we'll hit a DCHECK as
> AdmissionController::ReleaseQuery() assumes that all backends have already
> been released.
> We should clean this up and ensure that resources are always released
> properly.
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