[jira] [Commented] (HDFS-6685) Balancer should preserve storage type of replicas

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-6685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14078980#comment-14078980 ] 

Hadoop QA commented on HDFS-6685:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12658583/h6685_20140730.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/7494//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7494//console

This message is automatically generated.

> Balancer should preserve storage type of replicas
> -------------------------------------------------
>
>                 Key: HDFS-6685
>                 URL: https://issues.apache.org/jira/browse/HDFS-6685
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: balancer
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>         Attachments: h6685_20140728.patch, h6685_20140729.patch, h6685_20140730.patch
>
>
> When Balancer moves replicas to balance the cluster, it should always move replicas from a storage with any type to another storage with the same type, i.e. it preserves storage type of replicas.  It does not make sense to move replicas to a different storage type.



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