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https://issues.apache.org/jira/browse/HDFS-12170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16099235#comment-16099235
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Chen Liang commented on HDFS-12170:
-----------------------------------

Thanks [~msingh] for the patch! Looks good to me overall, only one thing, looks 
like in certain places the time is used as {{long}}, and some other places used 
as {{String}}. Is there a particular reason for this? can we just use one type? 
I personally prefer using just {{long}}  type, such that we don't rely on that 
format specified in hadoop-common, and we can compare older/newer easily.

> Ozone: OzoneFileSystem: KSM should maintain key creation time and 
> modification time
> -----------------------------------------------------------------------------------
>
>                 Key: HDFS-12170
>                 URL: https://issues.apache.org/jira/browse/HDFS-12170
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Mukul Kumar Singh
>            Assignee: Mukul Kumar Singh
>             Fix For: HDFS-7240
>
>         Attachments: HDFS-12170-HDFS-7240.001.patch
>
>
> OzoneFileSystem will need modification time for files and directories created 
> in ozone file system. 
> KSM should maintain key creation time and modification time for the 
> individual key.



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