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From "Eli Collins (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2731) Autopopulate standby name dirs if they're empty
Date Fri, 30 Dec 2011 00:33:30 GMT
Autopopulate standby name dirs if they're empty
-----------------------------------------------

                 Key: HDFS-2731
                 URL: https://issues.apache.org/jira/browse/HDFS-2731
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: ha
    Affects Versions: HA branch (HDFS-1623)
            Reporter: Eli Collins
            Assignee: Eli Collins


To setup a SBN we currently format the primary then manually copy the name dirs to the SBN.
The SBN should do this automatically. Specifically, on NN startup, if HA with a shared edits
dir is configured and populated, if the SBN has empty name dirs it should downloads the image
and log from the primary (as an optimization it could copy the logs from the shared dir).
If the other NN is still in standby then it should fails to start as it does currently.

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