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https://issues.apache.org/jira/browse/HDFS-2260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086959#comment-13086959
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Hudson commented on HDFS-2260:
------------------------------

Integrated in Hadoop-Hdfs-trunk #756 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/756/])
    HDFS-2260. Refactor BlockReader into an interface and implementation. 
Contributed by Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1159004
Files : 
* 
/hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/TestClientBlockVerification.java
* 
/hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/server/datanode/TestDataNodeVolumeFailure.java
* /hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/BlockReader.java
* 
/hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockTokenWithDFS.java
* /hadoop/common/trunk/hdfs/CHANGES.txt
* 
/hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/BlockReaderFactory.java
* 
/hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/common/JspHelper.java
* /hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/DFSInputStream.java
* 
/hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java
* 
/hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/RemoteBlockReader.java
* 
/hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/BlockReaderTestUtil.java
* 
/hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/TestConnCache.java


> Refactor BlockReader into an interface and implementation
> ---------------------------------------------------------
>
>                 Key: HDFS-2260
>                 URL: https://issues.apache.org/jira/browse/HDFS-2260
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs client
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: 0.23.0
>
>         Attachments: hdfs-2260.txt, hdfs-2260.txt, hdfs-2260.txt
>
>
> For the new block reader in HDFS-2129, or the local block reader in HDFS-347, 
> we need to be able to support different implementations. This JIRA is to 
> simply refactor the current BlockReader into an interface and an 
> implementation.

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