Switch NameNode to use non-fair locks
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Key: HDFS-1796
URL: https://issues.apache.org/jira/browse/HDFS-1796
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Hairong Kuang
According to JavaDoc, a non-fair lock will normally have higher throughput than
a fair lock. Our experiment also shows an improved performance when using a
non-fair lock. We should switch namenode to use non-fair locks.
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