tomscut created HDFS-16396:
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             Summary: Reconfig slow peer parameters for datanode
                 Key: HDFS-16396
                 URL: https://issues.apache.org/jira/browse/HDFS-16396
             Project: Hadoop HDFS
          Issue Type: New Feature
            Reporter: tomscut
            Assignee: tomscut


In large clusters, rolling restart datanodes takes a long time. We can make 
slow peers parameters and slow disks parameters in datanode reconfigurable to 
facilitate cluster operation and maintenance.



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