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https://issues.apache.org/jira/browse/HADOOP-18410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17584150#comment-17584150
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ASF GitHub Bot commented on HADOOP-18410:
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steveloughran commented on PR #4766:
URL: https://github.com/apache/hadoop/pull/4766#issuecomment-1225489007
either the fs tracks all open streams (weak ref map) and scans them, or each
stream schedules a worker to run every few minutes which will release the
stream if idle. fs is probably simpler, at least in terms of scheduling, thread
shutdown etc
> S3AInputStream.unbuffer() async drain not releasing http connections
> --------------------------------------------------------------------
>
> Key: HADOOP-18410
> URL: https://issues.apache.org/jira/browse/HADOOP-18410
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.3.9
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Blocker
> Labels: pull-request-available
>
> Impala tcp-ds setup to s3 is hitting problems with timeout fetching http
> connections from the s3a fs pool. Disabling s3a async drain makes this
> problem *go away*. assumption, either those async ops are blocking, or they
> are not releasing references properly.
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