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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HDFS-290) Additional performance improvement to chooseTarget
Date Tue, 02 Nov 2010 00:46:30 GMT

     [ https://issues.apache.org/jira/browse/HDFS-290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hairong Kuang resolved HDFS-290.
--------------------------------

    Resolution: Later

> Additional performance improvement to chooseTarget
> --------------------------------------------------
>
>                 Key: HDFS-290
>                 URL: https://issues.apache.org/jira/browse/HDFS-290
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Hairong Kuang
>            Assignee: Hairong Kuang
>         Attachments: rackMap.patch, rackMap1.patch, rackMap2.patch, rackMap3.patch
>
>
> 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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