Thomas Tauber-Marshall created IMPALA-10591:
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Summary: 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
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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