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https://issues.apache.org/jira/browse/HDFS-6690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14064906#comment-14064906
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Hudson commented on HDFS-6690:
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FAILURE: Integrated in Hadoop-Mapreduce-trunk #1834 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1834/])
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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