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https://issues.apache.org/jira/browse/HDFS-3557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404157#comment-13404157
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Jeff Hodges commented on HDFS-3557:
-----------------------------------
Sigh, I thought I had removed all the user specific stuff. Not able to edit it,
so I'll just repost with it.
$ hdfs -ls '/user/jhodges/NOPE_\{INPUT\}'
ls: Illegal file pattern: Expecting set closure character or end of range, or }
for glob {INPUT at 6
$ hdfs -ls '/user/jhodges/NOPE_{INPUT}'
ls: Cannot access /user/jhodges/NOPE_{INPUT}: No such file or directory.
$ hdfs -ls /user/jhodges/NOPE_\{INPUT\}
ls: Cannot access /user/jhodges/NOPE_{INPUT}: No such file or directory.
Proof of existence:
$ hdfs -ls /user/jhodges | grep NOPE
drwxr-xr-x - jhodges supergroup 0 2012-06-29 19:47
/user/jhodges/NOPE_{INPUT}
> provide means of escaping special characters to `hadoop fs` command
> -------------------------------------------------------------------
>
> Key: HDFS-3557
> URL: https://issues.apache.org/jira/browse/HDFS-3557
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Jeff Hodges
> Priority: Minor
>
> When running an investigative job, I used a date parameter that selected
> multiple directories for the input (e.g. "my_data/2012/06/{18,19,20}"). It
> used this same date parameter when creating the output directory.
> But `hadoop fs` was unable to ls, getmerge, or rmr it until I used the regex
> operator "?" and mv to change the name (that is, `-mv
> output/2012/06/?18,19,20? foobar").
> Shells and filesystems for other systems provide a means of escaping "special
> characters" generically, but there seems to be no such means in HDFS/`hadoop
> fs`. Providing one would be a great way to make accessing HDFS more robust.
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