[jira] [Assigned] (IMPALA-6189) Guard blocking function calls with a kernel watchdog

["bharath v (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-6189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

bharath v reassigned IMPALA-6189:
---------------------------------

    Assignee: bharath v

> 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
>
> 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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