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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3540) Further improvement on recovery mode and edit log toleration in branch-1
Date Fri, 15 Jun 2012 21:52:42 GMT
Tsz Wo (Nicholas), SZE created HDFS-3540:
--------------------------------------------

             Summary: Further improvement on recovery mode and edit log toleration in branch-1
                 Key: HDFS-3540
                 URL: https://issues.apache.org/jira/browse/HDFS-3540
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: name-node
    Affects Versions: 1.2.0
            Reporter: Tsz Wo (Nicholas), SZE
            Assignee: Tsz Wo (Nicholas), SZE


*Recovery Mode*: HDFS-3479 backported HDFS-3335 to branch-1.  However, the recovery mode feature
in branch-1 is dramatically different from the recovery mode in trunk since the edit log implementations
in these two branch are different.  For example, there is UNCHECKED_REGION_LENGTH in branch-1
but not in trunk.

*Edit Log Toleration*: HDFS-3521 added this feature to branch-1 to remedy UNCHECKED_REGION_LENGTH
and to tolerate edit log corruption.

There are overlaps between these two features.  We study potential further improvement in
this issue.

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