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https://issues.apache.org/jira/browse/IMPALA-11613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xianqing He updated IMPALA-11613:
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Fix Version/s: Impala 4.2.0
> Optimize result spooling for the statement that returns at most one row
> -----------------------------------------------------------------------
>
> Key: IMPALA-11613
> URL: https://issues.apache.org/jira/browse/IMPALA-11613
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Xianqing He
> Assignee: Xianqing He
> Priority: Major
> Fix For: Impala 4.2.0
>
>
> If result spooling is enabled and the statement that returns at most one row,
> we can
> set the min memory reservation by the row size.
>
> The strategy is as follows: # If it contains complex data types we set the
> reservation as before.
> # If it contains string type we set the reservation as max_row_size.
> # Others compute the row size.
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