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https://issues.apache.org/jira/browse/IMPALA-6189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16680577#comment-16680577
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Dinesh Garg commented on IMPALA-6189:
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Triage logs : [~bharathv] had a patch a while back. Todd suggested a diffrent
approach, [~bharathv] to further look into this.
> Guard blocking function calls with a kernel watchdog
> ----------------------------------------------------
>
> Key: IMPALA-6189
> URL: https://issues.apache.org/jira/browse/IMPALA-6189
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Reporter: Lars Volker
> Assignee: bharath v
> Priority: Major
> Labels: observability, supportability
>
> Kudu uses a [watchdog
> thread|https://github.com/apache/kudu/blob/master/src/kudu/util/kernel_stack_watchdog.h]
> to log warning about threads that seem stuck.
> {quote}
> Before performing some operation which may stall (eg IO) or which we expect
> should be short (e.g. a callback on a critical thread that should not block),
> threads may mark themselves as "watched", with a threshold beyond which they
> would like warnings to be emitted including their stack trace at that time.
> {quote}
> We already pulled kudu/util into our codebase and it seems after starting a
> watchdog thread we should be able to use this, too.
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