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https://issues.apache.org/jira/browse/HDFS-13512?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16458915#comment-16458915
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Ajay Kumar commented on HDFS-13512:
-----------------------------------
[~shahrs87]
{quote} Then why not send all the information from server to construct
ErasureCodingPolicy and use that.{quote}
ListStatus is already among the slowest calls for Hdfs. Sending all the info
for ecPolicy will create more redundancy and further slow it down. If you still
prefer this approach then we can update the patch accordingly.
> 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, HDFS-13512.01.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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