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Posted to common-issues@hadoop.apache.org by "Mukund Thakur (Jira)" <ji...@apache.org> on 2022/09/08 19:23:00 UTC

[jira] [Commented] (HADOOP-18447) Vectored IO: Threadpool should be closed on interrupts or during close calls

    [ https://issues.apache.org/jira/browse/HADOOP-18447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17601976#comment-17601976 ] 

Mukund Thakur commented on HADOOP-18447:
----------------------------------------

Currently the threadpool is shared unbounded one but will be moved bounded one. 

But we are terminating the running vectored IO operations when the stream is closed [https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AInputStream.java#L114] 

https://github.com/apache/hadoop/blob/trunk/hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/S3AInputStream.java#L611

> Vectored IO: Threadpool should be closed on interrupts or during close calls
> ----------------------------------------------------------------------------
>
>                 Key: HADOOP-18447
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18447
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: common, fs, fs/adl, fs/s3
>            Reporter: Rajesh Balamohan
>            Priority: Major
>              Labels: performance, stability
>         Attachments: Screenshot 2022-09-08 at 9.22.07 AM.png
>
>
> Vectored IO threadpool should be closed on any interrupts or during S3AFileSystem/S3AInputStream close() calls.
> E.g Query which got cancelled in the middle of the run. However, in background (e.g LLAP) vectored IO threads continued to run.
>  
> !Screenshot 2022-09-08 at 9.22.07 AM.png|width=537,height=164!



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