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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6583) Remove clientNode in FileUnderConstructionFeature
Date Sun, 22 Jun 2014 13:42:24 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14040131#comment-14040131
] 

Hudson commented on HDFS-6583:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1809 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1809/])
HDFS-6583. Remove clientNode in FileUnderConstructionFeature. Contributed by Haohui Mai. (wheat9:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1604541)
* /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/FSDirectory.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormat.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageSerialization.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FileUnderConstructionFeature.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeFile.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/CreateEditsLog.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestEditLog.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestINodeFile.java


> Remove clientNode in FileUnderConstructionFeature
> -------------------------------------------------
>
>                 Key: HDFS-6583
>                 URL: https://issues.apache.org/jira/browse/HDFS-6583
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>            Priority: Minor
>             Fix For: 2.5.0
>
>         Attachments: HDFS-6583.000.patch, HDFS-6583.001.patch
>
>
> {{FileUnderConstructionFeature}} contains two fields {{clientMachine}} and {{clientNode}}.
{{clientNode}} keeps a reference of a {{DatanodeDescriptor}}. The reference be recomputed
by consulting {{DatanodeManager}}.
> This jira proposes to remove {{clientNode}} in the {{FileUnderConstructionFeature}} to
simplify the code and to reduce overhead.



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