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https://issues.apache.org/jira/browse/HDFS-7666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14306829#comment-14306829
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Rakesh R commented on HDFS-7666:
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yeah, you are correct. I agree with you:)
> Datanode blockId layout upgrade threads should be daemon thread
> ---------------------------------------------------------------
>
> Key: HDFS-7666
> URL: https://issues.apache.org/jira/browse/HDFS-7666
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Rakesh R
> Assignee: Rakesh R
> Attachments: HDFS-7666-v1.patch
>
>
> This jira is to mark the layout upgrade thread as daemon thread.
> {code}
> int numLinkWorkers = datanode.getConf().getInt(
> DFSConfigKeys.DFS_DATANODE_BLOCK_ID_LAYOUT_UPGRADE_THREADS_KEY,
> DFSConfigKeys.DFS_DATANODE_BLOCK_ID_LAYOUT_UPGRADE_THREADS);
> ExecutorService linkWorkers =
> Executors.newFixedThreadPool(numLinkWorkers);
> {code}
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