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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2003) Separate FSEditLog reading logic from editLog memory state building logic
Date Thu, 26 May 2011 16:53:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13039778#comment-13039778
] 

Hadoop QA commented on HDFS-2003:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12480553/HDFS-2003.diff
  against trunk revision 1127966.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 9 new or modified tests.

    -1 patch.  The patch command could not apply the patch.

Console output: https://builds.apache.org/hudson/job/PreCommit-HDFS-Build/637//console

This message is automatically generated.

> Separate FSEditLog reading logic from editLog memory state building logic
> -------------------------------------------------------------------------
>
>                 Key: HDFS-2003
>                 URL: https://issues.apache.org/jira/browse/HDFS-2003
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>    Affects Versions: Edit log branch (HDFS-1073)
>            Reporter: Ivan Kelly
>            Assignee: Ivan Kelly
>             Fix For: Edit log branch (HDFS-1073)
>
>         Attachments: HDFS-2003.diff
>
>
> Currently FSEditLogLoader has code for reading from an InputStream interleaved with code
which updates the FSNameSystem and FSDirectory. This makes it difficult to read an edit log
without having a whole load of other object initialised, which is problematic if you want
to do things like count how many transactions are in a file etc. 
> This patch separates the reading of the stream and the building of the memory state.


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