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https://issues.apache.org/jira/browse/IMPALA-5704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-5704:
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Priority: Minor (was: Major)
> Parallelise read I/O for spilling operators where it is currently sequential
> ----------------------------------------------------------------------------
>
> Key: IMPALA-5704
> URL: https://issues.apache.org/jira/browse/IMPALA-5704
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 2.10.0
> Reporter: Tim Armstrong
> Priority: Minor
> Labels: performance
>
> After IMPALA-3200 goes in, we can make improvements to the performance of
> spilling operators by exploiting the new async pin behaviour of IMPALA-5169.
> There are several known cases where read I/O is not effectively overlapped
> with compute, and multiple disks are not used effectively by doing multiple
> I/Os concurrently
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