Andrew Wang created HDFS-7048:
---------------------------------

             Summary: Incorrect Balancer#Source wait/notify leads to early 
termination
                 Key: HDFS-7048
                 URL: https://issues.apache.org/jira/browse/HDFS-7048
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: balancer
    Affects Versions: 2.6.0
            Reporter: Andrew Wang


Split off from HDFS-6621. The Balancer attempts to wake up scheduler threads 
early as sources finish, but the synchronization with wait and notify is 
incorrect. This ticks the failure count, which can lead to early termination.



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