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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6690) Deduplicate xattr names in memory
Date Thu, 17 Jul 2014 10:38:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14064799#comment-14064799
] 

Hudson commented on HDFS-6690:
------------------------------

FAILURE: Integrated in Hadoop-Yarn-trunk #615 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/615/])
HDFS-6690. Deduplicate xattr names in memory. (wang) (wang: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1611226)
* /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/XAttrStorage.java


> Deduplicate xattr names in memory
> ---------------------------------
>
>                 Key: HDFS-6690
>                 URL: https://issues.apache.org/jira/browse/HDFS-6690
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 2.5.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>             Fix For: 2.6.0
>
>         Attachments: hdfs-6690.001.patch, hdfs-6690.002.patch, hdfs-6690.003.patch
>
>
> When the same string is used repeatedly for an xattr name, we could potentially save
some NN memory by deduplicating the strings.



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