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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13512) WebHdfs getHdfsFileStatus/getFileStatus doesn't return ecPolicy name wired in json
Date Sat, 28 Apr 2018 14:15:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16457625#comment-16457625
] 

Arpit Agarwal commented on HDFS-13512:
--------------------------------------

Thanks for the patch [~ajayydv]. Could you please a couple of test cases just for HdfsFileStatus
to verify that:
# If policy is present but ecPolicyName is null, then non-null name is returned.
# If policy is absent, and ecPolicyName is present, then non-null name is returned.
# If both are null, then null is returned.

> WebHdfs getHdfsFileStatus/getFileStatus doesn't return ecPolicy name wired in json
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-13512
>                 URL: https://issues.apache.org/jira/browse/HDFS-13512
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Ajay Kumar
>            Assignee: Ajay Kumar
>            Priority: Major
>         Attachments: HDFS-13512.00.patch
>
>
> Currently LISTSTATUS call to WebHdfs returns a json. These jsonArray elements do have
the ecPolicy name.
> But when WebHdfsFileSystem converts it back into a FileStatus object, the ecPolicy is
not added. This is because the json contains only the ecPolicy name and this name is not sufficient
to decode it back to ErasureCodingPolicy object.
> While converting json back to HdfsFileStatus we should set ecPolicyName whenever it is
set for give file/dir.



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