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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3548) NamenodeFsck.copyBlock fails to create a Block Reader
Date Mon, 09 Jul 2012 11:42:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13409347#comment-13409347
] 

Hudson commented on HDFS-3548:
------------------------------

Integrated in Hadoop-Hdfs-trunk #1098 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1098/])
    HDFS-3548. NamenodeFsck.copyBlock fails to create a Block Reader. Contributed by Colin
Patrick McCabe (Revision 1358822)

     Result = FAILURE
eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1358822
Files : 
* /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/server/namenode/NamenodeFsck.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/DFSTestUtil.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFsck.java

                
> NamenodeFsck.copyBlock fails to create a Block Reader
> -----------------------------------------------------
>
>                 Key: HDFS-3548
>                 URL: https://issues.apache.org/jira/browse/HDFS-3548
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.1, 2.0.0-alpha
>            Reporter: Todd Lipcon
>            Assignee: Colin Patrick McCabe
>            Priority: Critical
>             Fix For: 2.0.1-alpha
>
>         Attachments: HDFS-3548.001.patch, HDFS-3548.002.patch, HDFS-3548.003.patch
>
>
> NamenodeFsck.copyBlock creates a Socket using {{new Socket()}}, and thus that socket
doesn't have an associated Channel. Then, it fails to create a BlockReader since RemoteBlockReader2
needs a socket channel.
> (thanks to Hiroshi Yokoi for reporting)

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