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https://issues.apache.org/jira/browse/HDFS-4821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13657226#comment-13657226
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Colin Patrick McCabe commented on HDFS-4821:
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This makes sense to me. We may also want to provide a flag that causes us to
output the control characters directly, similar to ls's {{--literal}} flag. I
think most people would not choose to use this, though.
Also note that printing control characters out directly to the console can be a
security vulnerability.
http://seclists.org/fulldisclosure/2003/Feb/att-341/Termulation.txt
It should be off by default.
> It's possible to create files with special characters in the filenames, but
> 'hadoop fs -ls' gives no indication
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-4821
> URL: https://issues.apache.org/jira/browse/HDFS-4821
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client
> Reporter: Stephen Fritz
>
> For example:
> -bash-4.1$ hadoop fs -mkdir /user/hdfs
> -bash-4.1$ hadoop fs -touchz /user/hdfs/dupfile
> -bash-4.1$ hadoop fs -touchz /user/hdfs/dupfile^M
> -bash-4.1$ hadoop fs -ls /user/hdfs
> Found 2 items
> -rw-r--r-- 3 hdfs supergroup 0 2013-05-14 07:13 /user/hdfs/dupfile
> -rw-r--r-- 3 hdfs supergroup 0 2013-05-14 07:13 /user/hdfs/dupfile
> By way of comparison, bash will print a '?' at the end of the file name,
> indicating there's a special character in the filename, which isn't perfect
> but at least gives an indication that there's more to the filename than just
> alphanumeric characters
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