Eric Badger created HDFS-10617:
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             Summary: PendingReplicationBlocks.size() should be synchronized
                 Key: HDFS-10617
                 URL: https://issues.apache.org/jira/browse/HDFS-10617
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.22.0
            Reporter: Eric Badger
            Assignee: Eric Badger


pendingReplications is a HashMap, which is not a thread-safe data structure. 
Therefore, the size() function should be synchronized just like the rest of the 
member functions. 



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