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https://issues.apache.org/jira/browse/HADOOP-16570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HADOOP-16570 started by Steve Loughran.
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> S3A committers leak threads on job/task commit
> ----------------------------------------------
>
> Key: HADOOP-16570
> URL: https://issues.apache.org/jira/browse/HADOOP-16570
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.2.0, 3.1.2
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
>
> The fixed size ThreadPool created in AbstractS3ACommitter doesn't get cleaned
> up at EOL; as a result you leak the no. of threads set in
> "fs.s3a.committer.threads"
> Not visible in MR/distcp jobs, but ultimately causes OOM on Spark
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