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Posted to issues-all@impala.apache.org by "Quanlong Huang (JIRA)" <ji...@apache.org> on 2019/08/17 14:21:00 UTC
[jira] [Updated] (IMPALA-6194) Ensure all fragment instances notice
cancellation
[ https://issues.apache.org/jira/browse/IMPALA-6194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Quanlong Huang updated IMPALA-6194:
-----------------------------------
Target Version: Impala 3.4.0 (was: Impala 3.3.0)
> Ensure all fragment instances notice cancellation
> -------------------------------------------------
>
> Key: IMPALA-6194
> URL: https://issues.apache.org/jira/browse/IMPALA-6194
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Lars Volker
> Priority: Critical
> Labels: observability, supportability
>
> Currently queries can get stuck in an uncancellable state, e.g. when blocking on function calls or condition variables without periodically checking for cancellation. We should eliminate all those calls and make sure we don't re-introduce such issues. One option would be a watchdog to check that each fragment instance regularly calls RETURN_IF_CANCEL.
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