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https://issues.apache.org/jira/browse/HADOOP-12390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14735734#comment-14735734
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Chris Nauroth commented on HADOOP-12390:
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It would be nice to make this consistent with the DistCp {{-p}} sub-options, so
that ends users can remember the same syntax for both commands.
http://hadoop.apache.org/docs/r2.7.1/hadoop-distcp/DistCp.html#Command_Line_Options
> Enhance FsShell file put to support selectively preserving individual file
> attributes.
> --------------------------------------------------------------------------------------
>
> Key: HADOOP-12390
> URL: https://issues.apache.org/jira/browse/HADOOP-12390
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Reporter: Chris Nauroth
>
> {{hadoop fs -put}} currently supports the {{-p}} option. When used, this
> option preserves the source file's access time, modification time, ownership
> and mode. If the destination is HDFS, then this effectively means HDFS must
> be configured to use modification time. If the HDFS deployment chooses to
> disable modification time by setting {{dfs.namenode.accesstime.precision}} to
> 0, then attempts to use the {{-p}} flag all fail with "Access time for hdfs
> is not configured." This issue proposes to introduce separate options for
> preserving just ownership, just mode, or just times. For backwards
> compatibility, the behavior of a bare {{-p}} must continue to be preserving
> all 3.
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