Wei-Chiu Chuang created HDFS-14724:
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             Summary: Fix JDK7 compatibility in branch-2
                 Key: HDFS-14724
                 URL: https://issues.apache.org/jira/browse/HDFS-14724
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.10.0
            Reporter: Wei-Chiu Chuang


With the feature Consistent Read from Standby now in branch-2, I found it 
breaks the build when building with JDK7, because it uses 
java.util.concurrent.atomic.LongAccumulator which is only in JDK8 and above.

 

We should figure out if we want to fix it, or give up JDK7 compatibility.

[~xkrogen] [~shv] [~vagarychen]



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