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https://issues.apache.org/jira/browse/IMPALA-13478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe McDonnell resolved IMPALA-13478.
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Fix Version/s: Impala 5.0.0
Resolution: Fixed
> Don't sync tuple cache file contents to disk immediately
> --------------------------------------------------------
>
> Key: IMPALA-13478
> URL: https://issues.apache.org/jira/browse/IMPALA-13478
> Project: IMPALA
> Issue Type: Task
> Components: Backend
> Affects Versions: Impala 4.5.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Major
> Fix For: Impala 5.0.0
>
>
> Currently, the tuple cache file writer syncs the file contents to disk before
> closing the file. This slows down the write path considerably, especially if
> disks are slow. This should be moved off of the fast path and done
> asynchronously. As a first step, this can remove the sync call and close the
> file without syncing. Other readers are still able to access it, and the
> kernel will flush the buffers as needed.
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