[jira] [Commented] (HADOOP-13736) Change PathMetadata to hold S3AFileStatus instead of FileStatus.

["Mingliang Liu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-13736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15589939#comment-15589939 ] 

Mingliang Liu commented on HADOOP-13736:
----------------------------------------

+1 for the proposal. Thanks,

> Change PathMetadata to hold S3AFileStatus instead of FileStatus.
> ----------------------------------------------------------------
>
>                 Key: HADOOP-13736
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13736
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>
> {{S3AFileStatus}} is implemented differently with {{FileStatus}}, for instance {{S3AFileStatus#isEmptyDirectory()}} is not implemented in {{FileStatus()}}. And {{access_time}}, {{block_replication}}, {{owner}}, {{group}} and a few other fields are not meaningful in {{S3AFileStatus}}.  
> So in the scope of {{S3guard}}, it should use {{S3AFileStatus}} in  instead of {{FileStatus}} in {{PathMetadaa}} to avoid casting the types back and forth in S3A. 



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