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https://issues.apache.org/jira/browse/IMPALA-9586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong reassigned IMPALA-9586:
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Assignee: Tim Armstrong
> Update query option docs to account for interactions with mt_dop
> ----------------------------------------------------------------
>
> Key: IMPALA-9586
> URL: https://issues.apache.org/jira/browse/IMPALA-9586
> Project: IMPALA
> Issue Type: Improvement
> Components: Docs
> Reporter: Tim Armstrong
> Assignee: Tim Armstrong
> Priority: Major
>
> in some cases mt_dop changes the behaviour of other options or makes them a
> no-op. We need to update docs to reflect this.
> * Setting NUM_NODES=1 along with MT_DOP >=1 effectively reduces MT_DOP to 1,
> i.e. only one thread is used.
> * NUM_SCANNER_THREADS has no effect when MT_DOP>=1
> * Maybe other changes?
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