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https://issues.apache.org/jira/browse/HDFS-4139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13497071#comment-13497071
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Hudson commented on HDFS-4139:
------------------------------
Integrated in Hadoop-Hdfs-trunk #1226 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1226/])
HDFS-4139. fuse-dfs RO mode still allows file truncation. Contributed by
Colin Patrick McCabe (Revision 1409088)
Result = FAILURE
eli : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1409088
Files :
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_context_handle.h
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_dfs.c
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_impls_mkdir.c
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_impls_rename.c
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_impls_rmdir.c
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_impls_unlink.c
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_init.c
> fuse-dfs RO mode still allows file truncation
> ---------------------------------------------
>
> Key: HDFS-4139
> URL: https://issues.apache.org/jira/browse/HDFS-4139
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fuse-dfs
> Affects Versions: 2.0.2-alpha
> Reporter: Andy Isaacson
> Assignee: Colin Patrick McCabe
> Fix For: 2.0.3-alpha
>
> Attachments: HDFS-4139.001.patch, HDFS-4139.002.patch
>
>
> Mounting a fuse-dfs in readonly mode with "-oro" still allows the user to
> truncate files.
> {noformat}
> $ grep fuse /etc/fstab
> hadoop-fuse-dfs#dfs://ubu-cdh-0.local /export/hdfs fuse noauto,ro 0 0
> $ sudo mount /export/hdfs
> $ hdfs dfs -ls /tmp
> ...
> -rw-r--r-- 3 ubuntu hadoop 4 2012-11-01 14:18 /tmp/blah.txt
> $ echo foo > /export/hdfs/tmp/blah.txt
> -bash: /export/hdfs/tmp/blah.txt: Permission denied
> $ hdfs dfs -ls /tmp
> ...
> -rw-r--r-- 3 ubuntu hadoop 0 2012-11-01 14:28 /tmp/blah.txt
> $ ps ax | grep dfs
> ...
> 13639 ? Ssl 0:02 /usr/lib/hadoop/bin/fuse_dfs dfs://ubu-cdh-0.local
> /export/hdfs -o ro,dev,suid
> {noformat}
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