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https://issues.apache.org/jira/browse/HADOOP-18186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17598128#comment-17598128
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ASF GitHub Bot commented on HADOOP-18186:
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virajjasani commented on PR #4796:
URL: https://github.com/apache/hadoop/pull/4796#issuecomment-1232361230
With `scale`
```
[INFO] -
> s3a prefetching to use SemaphoredDelegatingExecutor for submitting work
> -----------------------------------------------------------------------
>
> Key: HADOOP-18186
> URL: https://issues.apache.org/jira/browse/HADOOP-18186
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
>
> Use SemaphoredDelegatingExecutor for each to stream to submit work, if
> possible, for better fairness in processes with many streams.
> this also takes a DurationTrackerFactory to count how long was spent in the
> queue, something we would want to know
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