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From "Ivan Kelly (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-1557) Separate Storage from FSImage
Date Thu, 23 Dec 2010 09:37:01 GMT
Separate Storage from FSImage

                 Key: HDFS-1557
                 URL: https://issues.apache.org/jira/browse/HDFS-1557
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: name-node
    Affects Versions: 0.21.0
            Reporter: Ivan Kelly
             Fix For: 0.22.0

FSImage currently derives from Storage and FSEditLog has to call methods directly on FSImage
to access the filesystem. This JIRA is to separate the Storage class out into NNStorage so
that FSEditLog is less dependent on FSImage. From this point, the other parts of the circular
dependency should be easy to fix.

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