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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1155) Additional performance improvement to chooseTarget
Date Fri, 23 Mar 2007 23:00:32 GMT
Additional performance improvement to chooseTarget

                 Key: HADOOP-1155
                 URL: https://issues.apache.org/jira/browse/HADOOP-1155
             Project: Hadoop
          Issue Type: Improvement
          Components: dfs
    Affects Versions: 0.12.2
            Reporter: Hairong Kuang
         Assigned To: Hairong Kuang
             Fix For: 0.13.0

A few additional thoughts to improve the performance of chooseTarget:
1. Reduce the # of calls to getDistance in sortedByDistance
2. Improve the performance of getNode by adding a rack name to rack node map

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