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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-9087) Add some jitter to DataNode.checkDiskErrorThread
Date Wed, 16 Sep 2015 00:34:45 GMT
Elliott Clark created HDFS-9087:
-----------------------------------

             Summary: Add some jitter to DataNode.checkDiskErrorThread
                 Key: HDFS-9087
                 URL: https://issues.apache.org/jira/browse/HDFS-9087
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: datanode
    Affects Versions: 2.6.0
            Reporter: Elliott Clark
            Assignee: Elliott Clark


If all datanodes are started across a cluster at the same time (or errors in the network cause
ioexceptions) there can be storms where lots of datanodes check their disks at the exact same
time.



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