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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13626) Remove distcp dependency on FileStatus serialization
Date Wed, 05 Apr 2017 22:50:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15957953#comment-15957953
] 

Yongjun Zhang commented on HADOOP-13626:
----------------------------------------

Thanks [~chris.douglas], committed to branch-2.


> Remove distcp dependency on FileStatus serialization
> ----------------------------------------------------
>
>                 Key: HADOOP-13626
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13626
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: tools/distcp
>            Reporter: Chris Douglas
>            Assignee: Chris Douglas
>             Fix For: 2.9.0, 3.0.0-alpha2
>
>         Attachments: HADOOP-13626.001.patch, HADOOP-13626.002.patch, HADOOP-13626.003.patch,
HADOOP-13626.004.patch
>
>
> DistCp uses an internal struct {{CopyListingFileStatus}} to record metadata. Because
this record extends {{FileStatus}}, it also relies on the {{Writable}} contract from that
type. Because DistCp performs its checks on a subset of the fields (i.e., does not actually
rely on {{FileStatus}} as a supertype), these types should be independent.



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