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Tsz Wo (Nicholas), SZE commented on HDFS-1495: ---------------------------------------------- In Hadoop, "fs -rmr" without -skipTrash actually is "move to trash" if trash is enabled. It will call or FileSystem.rename(..). Therefore, it is allowed. Move is also allowed in POSFIX. There will be a permission denied for "fs -rmr -skipTrash", which will call FileSystem.delete(..). > HDFS does not properly check permissions of files in a directory when doing > rmr > ------------------------------------------------------------------------------- > > Key: HDFS-1495 > URL: https://issues.apache.org/jira/browse/HDFS-1495 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 0.20.2 > Reporter: Alan Gates > > In POSIX file semantics, the ability to remove an entry a file is determined > by whether the user has write permissions on the directory containing the > file. However, to delete recursively (rm -r) the user must have write > permissions in all directories being removed. Thus if you have a directory > structure like /a/b/c and a user has write permissions on a but not on b, > then he is not allowed to do 'rm -r b'. This is because he does not have > permissions to remove c, so the rm of b fails, even though he has permission > to remove b. > However, 'hadoop fs -rmr b' removes both b and c in this case. It should > instead fail and return an error message saying the user does not have > permission to remove c. 'hadoop fs -rmr c' correctly fails. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.