YuanbenWang commented on PR #5547:
URL: https://github.com/apache/hadoop/pull/5547#issuecomment-1514732281
> > Some pathnames which contains special character(s) may lead to
unexpected results. For example, there is a file named "/foo/file*" in my
cluster, created by "DistributedFileSystem.create(new Path("/foo/file*"))".
When I want to remove it, I type in "hadoop fs -rm /foo/file*" in shell.
However, I remove all the files with the prefix of "/foo/file*" unexpectedly.
There are also some other characters just like '*', such as ' ', '|', '&', etc.
>
> Should have escaped the special character. That is how shell behaves.
>
> ```
> bash-4.2$ hdfs dfs -ls /dir
> Found 6 items
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:41 /dir/a
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:41 /dir/ab*
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abc
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcd
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcde
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcdef
> bash-4.2$ hdfs dfs -rm -r /dir/ab\\*
> Deleted /dir/ab*
> bash-4.2$ hdfs dfs -ls /dir
> Found 5 items
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:41 /dir/a
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abc
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcd
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcde
> drwxr-xr-x - hadoop supergroup 0 2023-04-17 12:42 /dir/abcdef
> ```
Thank you for your reviewing and it‘s a useful way to escape special
character.
Actually, this PR aims to offer an optional and simple way to avoid the risk
of misoperation.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
