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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2547) Design doc is wrong about default block placement policy.
Date Thu, 10 Nov 2011 07:26:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13147536#comment-13147536
] 

Hadoop QA commented on HDFS-2547:
---------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12503161/HDFS-2547.patch
  against trunk revision .

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

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +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.TestFileAppend
                  org.apache.hadoop.hdfs.TestDFSRemove
                  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/1550//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/1550//console

This message is automatically generated.
                
> Design doc is wrong about default block placement policy.
> ---------------------------------------------------------
>
>                 Key: HDFS-2547
>                 URL: https://issues.apache.org/jira/browse/HDFS-2547
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.20.1
>            Reporter: Harsh J
>            Assignee: Harsh J
>            Priority: Trivial
>             Fix For: 0.24.0
>
>         Attachments: HDFS-2547.patch
>
>
> bq. For the common case, when the replication factor is three, HDFS's placement policy
is to put one replica on one node in the local rack, another on a node in a different (remote)
rack, and the last on a different node in the same *remote* rack.
> Should actually be: "and the last on a different node in the same *local* rack."

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