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https://issues.apache.org/jira/browse/HDFS-8009?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haohui Mai updated HDFS-8009:
-----------------------------
    Attachment: HDFS-8009.000.patch

> Signal congestion on the DataNode
> ---------------------------------
>
>                 Key: HDFS-8009
>                 URL: https://issues.apache.org/jira/browse/HDFS-8009
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>         Attachments: HDFS-8009.000.patch
>
>
> The DataNode should signal congestion (i.e. "I'm too busy") in the 
> PipelineAck using the mechanism introduced in HDFS-7270.



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