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https://issues.apache.org/jira/browse/HDDS-10564?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18063303#comment-18063303
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Wei-Chiu Chuang commented on HDDS-10564:
----------------------------------------

For future reference: this bug caused Spark job to hang without explicitly 
calling spark.stop() at the end of job.

> Make Outputstream writeExecutor daemon threads
> ----------------------------------------------
>
>                 Key: HDDS-10564
>                 URL: https://issues.apache.org/jira/browse/HDDS-10564
>             Project: Apache Ozone
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.0.0, 1.4.1, HDDS-7593
>
>
> Found via the HBase CompressionTest HBASE-28448.
> We should consider making the threads daemon, not user thread. Otherwise 
> process may hang.



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