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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2223) Untangle depencencies between NN components
Date Wed, 03 Aug 2011 21:11:27 GMT
Untangle depencencies between NN components
-------------------------------------------

                 Key: HDFS-2223
                 URL: https://issues.apache.org/jira/browse/HDFS-2223
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: name-node
    Affects Versions: 0.23.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


Working in the NN a lot for HA (HDFS-1623) I've come across a number of situations where the
tangled dependencies between NN components has been problematic for adding new features and
for testability. It would be good to untangle some of these and clarify what the distinction
is between the different components: NameNode, FSNamesystem, FSDirectory, FSImage, NNStorage,
and FSEditLog

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