[jira] [Created] (HDFS-7666) Datanode blockId layout upgrade threads should be daemon thread

[Rakesh R (JIRA)]

Rakesh R created HDFS-7666:
------------------------------

             Summary: 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


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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