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https://issues.apache.org/jira/browse/HADOOP-15658?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16576108#comment-16576108
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Piotr Nowojski commented on HADOOP-15658:
-----------------------------------------

Sorry [~ste...@apache.org] but I don't think I will be able to find time to dig 
into this and fix it :( I just wanted to let you know about the problem that 
was reporter by our (Flink's) user that was using hadoop-aws connector.

> Memory leak in S3AOutputStream
> ------------------------------
>
>                 Key: HADOOP-15658
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15658
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs/s3
>    Affects Versions: 2.8.4
>            Reporter: Piotr Nowojski
>            Priority: Major
>
> S3AOutputStream by calling 
> {{org.apache.hadoop.fs.s3a.S3AFileSystem#createTmpFileForWrite}} indirectly 
> calls {{java.io.File#deleteOnExit}} and \{{java.io.DeleteOnExitHook}} which 
> are known for memory leaking:
>   
>  [https://bugs.java.com/view_bug.do?bug_id=6664633]
>  [https://bugs.java.com/view_bug.do?bug_id=4872014]
>   
>  Apparently it was even fixed for different component couple of years ago 
> https://issues.apache.org/jira/browse/HADOOP-8635 . 



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