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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6685) Balancer should preserve storage type of replicas
Date Fri, 01 Aug 2014 13:27:40 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14082228#comment-14082228
] 

Hudson commented on HDFS-6685:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #630 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/630/])
HDFS-6685. Balancer should preserve storage type of replicas. (szetszwo: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1615015)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/StorageType.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/PBHelper.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/BalancingPolicy.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/BlocksWithLocations.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/EnumCounters.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/EnumDoubles.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/proto/hdfs.proto
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocolPB/TestPBHelper.java


> 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
>             Fix For: 2.6.0
>
>         Attachments: h6685_20140728.patch, h6685_20140729.patch, h6685_20140730.patch,
h6685_20140730b.patch, h6685_20140731.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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