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https://issues.apache.org/jira/browse/HDFS-7748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14384393#comment-14384393
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Anu Engineer commented on HDFS-7748:
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patches are submitted. we need to finish the review and get it committed.
> 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, hdfs-7748.002.patch,
> hdfs-7748.003.patch, hdfs-7748.004.patch, hdfs-7748.005.patch,
> hdfs-7748.006.patch, hdfs-7748.branch-2.7.006.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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