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From "Scott Chen (JIRA)" <j...@apache.org>
Subject [jira] Created: (MAPREDUCE-1823) Reduce the number of calls of HarFileSystem.getFileStatus in RaidNode
Date Fri, 28 May 2010 18:48:39 GMT
Reduce the number of calls of HarFileSystem.getFileStatus in RaidNode
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                 Key: MAPREDUCE-1823
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1823
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
    Affects Versions: 0.22.0
            Reporter: Scott Chen
            Assignee: Scott Chen
             Fix For: 0.22.0


RaidNode makes lots of calls of HarFileSystem.getFileStatus. This method fetches information
from DataNode so it is slow. It becomes the bottleneck of the RaidNode. It will be nice if
we can make this more efficient.

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