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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3943) NetworkTopology.pseudoSortByDistance does not need to be a synchronized method
Date Wed, 13 Aug 2008 00:07:44 GMT
NetworkTopology.pseudoSortByDistance does not need to be a synchronized method
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                 Key: HADOOP-3943
                 URL: https://issues.apache.org/jira/browse/HADOOP-3943
             Project: Hadoop Core
          Issue Type: Improvement
          Components: dfs
            Reporter: Hairong Kuang
            Assignee: Hairong Kuang
             Fix For: 0.19.0


When all requests to namenode are read, most handlers block on NetworkTopology object lock
when sorting replicas. Removing this necessary lock would reduce the contention in namenode
and therefore improve its throughput.

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