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https://issues.apache.org/jira/browse/HDFS-7748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14369852#comment-14369852
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Chris Nauroth commented on HDFS-7748:
-------------------------------------

Oops, I meant to say that the indentation needs to be 2 spaces.

> Separate ECN flags from the Status in the DataTransferPipelineAck
> -----------------------------------------------------------------
>
>                 Key: HDFS-7748
>                 URL: https://issues.apache.org/jira/browse/HDFS-7748
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Haohui Mai
>            Assignee: Anu Engineer
>            Priority: Blocker
>         Attachments: hdfs-7748.001.patch
>
>
> Prior to the discussions on HDFS-7270, the old clients might fail to talk to 
> the newer server when ECN is turned on. This jira proposes to separate the 
> ECN flags in a separate protobuf field to make the ack compatible on both 
> versions.



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