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Posted to issues-all@impala.apache.org by "Riza Suminto (Jira)" <ji...@apache.org> on 2023/03/15 20:08:00 UTC
[jira] [Assigned] (IMPALA-12005) Explain executor group set selection criteria in query profile
[ https://issues.apache.org/jira/browse/IMPALA-12005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Riza Suminto reassigned IMPALA-12005:
-------------------------------------
Assignee: Riza Suminto
> Explain executor group set selection criteria in query profile
> --------------------------------------------------------------
>
> Key: IMPALA-12005
> URL: https://issues.apache.org/jira/browse/IMPALA-12005
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 4.2.0
> Reporter: Riza Suminto
> Assignee: Riza Suminto
> Priority: Major
>
> [IMPALA-10992|http://issues.cloudera.org/browse/IMPALA-10992] and [IMPALA-11604|http://issues.cloudera.org/browse/IMPALA-11604] adds memory and cpu constraint criteria for executor group set selection. We should explain this selection criteria in query profile. Things that we should consider adding to query profile:
> * The effective degree of parallelism (EDoP) value that was used to calculate fitness for a given group. Possibly some additional details about how we got to that EDoP like the per fragment values.
> * Per host memory estimate for that group.
> * Reason for not choosing a given group (if any) - was it based on memory or CPU, what thresholds were we comparing to, etc.
> In the event of none executor group set is fit, the returned AnalysisException also need to provide more context. Right now, only these are returned:
> {code:java}
> AnalysisException: The query does not fit any executor group sets. {code}
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