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Posted to issues-all@impala.apache.org by "Riza Suminto (Jira)" <ji...@apache.org> on 2021/09/10 17:50:00 UTC

[jira] [Resolved] (IMPALA-10883) Dense runtime profile missing some fragment instance profile

     [ https://issues.apache.org/jira/browse/IMPALA-10883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Riza Suminto resolved IMPALA-10883.
-----------------------------------
    Fix Version/s: Impala 4.0.1
       Resolution: Fixed

> Dense runtime profile missing some fragment instance profile
> ------------------------------------------------------------
>
>                 Key: IMPALA-10883
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10883
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Distributed Exec
>    Affects Versions: Impala 4.0.0
>            Reporter: Riza Suminto
>            Assignee: Riza Suminto
>            Priority: Major
>             Fix For: Impala 4.0.1
>
>
> I ran TPC-DS Q78 in the following setup:
>  * Cluster of 20 nodes
>  * MT_DOP=12
>  * --gen_experimental_profile=true
> When I check the query profile of the completed query, I notice that couple fragment are missing profile from some instances. This missing profile is indicated in the missing instances id like this:
> {code:java}
> Fragment F00 [228 instances]:
>  Instances: Instance 204c719f48777536:b83eb0ed00000001 (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000002 (host=ia0306.halxg.cloudera.com:27000), , Instance 204c719f48777536:b83eb0ed00000004 (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000005 (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000006 (host=ia0306.halxg.cloudera.com:27000), , , Instance 204c719f48777536:b83eb0ed00000009 (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed0000000a (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed0000000b (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed0000000c (host=ia0306.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed0000000d (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed0000000e (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed0000000f (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000010 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000011 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000012 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000013 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000014 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000015 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000016 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000017 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000018 (host=ia0318.halxg.cloudera.com:27000), Instance 204c719f48777536:b83eb0ed00000019 (host=ia0322.halxg.cloudera.com:27000), , , , Instance 204c719f48777536:b83eb0ed0000001d (host=ia0322.halxg.cloudera.com:27000), , , , Instance 204c719f48777536:b83eb0ed00000021 (host=ia0322.halxg.cloudera.com:27000), , , , Instance 204c719f48777536:b83eb0ed00000025 (host=ia0317.halxg.cloudera.com:27000), , , , ...{code}
> Note several missing instances from host ia0306, ia0322, ia0317, and so on.
> I tried to tune FLAGS_status_report_interval_ms faster to every 500ms and there are even more instance profile missing. On the other hand, setting FLAGS_status_report_interval_ms=0 (only send final report) will result in complete runtime profile.



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