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From Jeszy <jes...@gmail.com>
Subject Re: Debugging Impala query that consistently hangs
Date Thu, 08 Feb 2018 19:59:57 GMT
Not sure that's what you're referring to, but scan progress isn't
necessarily indicative of overall query progress. Can you attach the text
profile of the cancelled query?
If you cannot upload attachments, the Summary section is the best starting
point, so please include that.

On 8 February 2018 at 20:53, Piyush Narang <p.narang@criteo.com> wrote:

> Hi folks,
>
>
>
> I have a query that I’m running on Impala that seems to consistently stop
> making progress after reaching 45-50%. It stays at that split number for a
> couple of hours (before I cancel it).  I don’t see any progress on the
> summary page either. I’m running 2.11.0-cdh5.14.0 RELEASE (build
> d68206561bce6b26762d62c01a78e6cd27aa7690). It seems to not be making
> progress from an exchange hash step.
>
> Has anyone run into this in the past? Any suggestions on what’s the best
> way to debug this? (I could take stack dumps on the coordinator / workers,
> but not sure if there’s any other way).
>
>
>
> Thanks,
>
>
>
> -- Piyush
>
>
>

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