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Posted to issues@impala.apache.org by "Balazs Jeszenszky (JIRA)" <ji...@apache.org> on 2018/03/26 18:46:00 UTC

[jira] [Created] (IMPALA-6741) Profiles of running queries should guarantee

Balazs Jeszenszky created IMPALA-6741:
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             Summary: Profiles of running queries should guarantee 
                 Key: IMPALA-6741
                 URL: https://issues.apache.org/jira/browse/IMPALA-6741
             Project: IMPALA
          Issue Type: Improvement
            Reporter: Balazs Jeszenszky


When looking at the profile of a running query, it's impossible to tell the degree of accuracy. We've seen issues both with instances not checking in with the coordinator for a long time, and with hung instances that never update their counters. There are some specific issues as well, see IMPALA-5200. This means that profiles taken off of running queries can't be used perf troubleshooting with confidence.

Ideally, Impala should guarantee counters to be written at a certain interval, and warn for counters or instances that are out of sync.



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