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Date: Thu, 3 Nov 2011 02:51:32 +0000 (UTC)
From: "Hadoop QA (Commented) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-2129) Simplify BlockReader to not inherit
 from FSInputChecker
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    [ https://issues.apache.org/jira/browse/HDFS-2129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142787#comment-13142787 ] 

Hadoop QA commented on HDFS-2129:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12502074/hdfs-2129.txt
  against trunk revision .

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

    +1 tests included.  The patch appears to include 23 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

    -1 core tests.  The patch failed these unit tests:
                  org.apache.hadoop.hdfs.TestFileAppend2
                  org.apache.hadoop.hdfs.TestBalancerBandwidth

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/1528//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1528//console

This message is automatically generated.
                
> Simplify BlockReader to not inherit from FSInputChecker
> -------------------------------------------------------
>
>                 Key: HDFS-2129
>                 URL: https://issues.apache.org/jira/browse/HDFS-2129
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs client, performance
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.24.0
>
>         Attachments: hdfs-2129-benchmark.png, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, hdfs-2129.txt, seq-read-1gb-bench.png
>
>
> BlockReader is currently quite complicated since it has to conform to the FSInputChecker inheritance structure. It would be much simpler to implement it standalone. Benchmarking indicates it's slightly faster, as well.

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