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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-1796) Switch NameNode to use non-fair locks
Date Tue, 29 Mar 2011 23:17:06 GMT
Switch NameNode to use non-fair locks
-------------------------------------

                 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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