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https://issues.apache.org/jira/browse/HADOOP-9214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16579993#comment-16579993
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Daryn Sharp commented on HADOOP-9214:
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Let's not add inconsistent semantics to the ancient touchz. Touchz is "Creates
a file of zero length". It shouldn't conditionally fail for existing files
depending on args passed. At that point it's not creating a file of zero
length.
I'd rather see a new "touch" command that implements posix semantics. Ie.
creates file if it doesn't exist, and/or updates times even for non-zero length
files. That would be very handy!
> Update touchz to allow modifying atime and mtime
> ------------------------------------------------
>
> Key: HADOOP-9214
> URL: https://issues.apache.org/jira/browse/HADOOP-9214
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools
> Affects Versions: 0.23.5
> Reporter: Brian Burton
> Assignee: Hrishikesh Gadre
> Priority: Minor
> Attachments: HADOOP-9214-001.patch, HADOOP-9214-002.patch,
> HADOOP-9214-003.patch, HADOOP-9214-004.patch
>
>
> Currently there is no way to set the mtime or atime of a file from the
> "hadoop fs" command line. It would be useful if the 'hadoop fs -touchz'
> command were updated to include this functionality.
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