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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1457) Limit transmission rate when transfering image between primary and secondary NNs
Date Thu, 14 Oct 2010 18:30:32 GMT
Limit transmission rate when transfering image between primary and secondary NNs
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                 Key: HDFS-1457
                 URL: https://issues.apache.org/jira/browse/HDFS-1457
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: 0.22.0
            Reporter: Hairong Kuang
             Fix For: 0.22.0


If the fsimage is very big. The network is full in a short time when SeconaryNamenode do checkpoint,
leading to Jobtracker access Namenode to get relevant file data to fail in job initialization
phase. So we limit transmission speed and compress transmission to resolve the problem. 

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