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Date: Tue, 11 Mar 2014 15:01:26 +0000 (UTC)
From: "Hudson (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <JIRA.12698773.1393977748336.43923.1394550086884@arcas>
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Subject: [jira] [Commented] (HDFS-6055) Change default configuration to
 limit file name length in HDFS
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    [ https://issues.apache.org/jira/browse/HDFS-6055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13930427#comment-13930427 ] 

Hudson commented on HDFS-6055:
------------------------------

SUCCESS: Integrated in Hadoop-Mapreduce-trunk #1723 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1723/])
HDFS-6055. Change default configuration to limit file name length in HDFS. Contributed by Chris Nauroth. (cnauroth: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1576095)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/fs/TestSymlinkHdfs.java


> Change default configuration to limit file name length in HDFS
> --------------------------------------------------------------
>
>                 Key: HDFS-6055
>                 URL: https://issues.apache.org/jira/browse/HDFS-6055
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 3.0.0, 2.4.0
>            Reporter: Suresh Srinivas
>            Assignee: Chris Nauroth
>             Fix For: 3.0.0, 2.4.0
>
>         Attachments: HDFS-6055.1.patch, HDFS-6055.2.patch
>
>
> Currently configuration "dfs.namenode.fs-limits.max-component-length" is set to 0. With this HDFS file names have no length limit. However, we see more users run into issues where they copy files from HDFS to another file system and the copy fails due to the file name length being too long.
> I propose changing the default configuration "dfs.namenode.fs-limits.max-component-length" to a reasonable value. This will be an incompatible change. However, user who need long file names can override this configuration to turn off length limit.
> What do folks think?


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