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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-7748) Separate ECN flags from the Status in the DataTransferPipelineAck
Date Tue, 24 Mar 2015 23:11:54 GMT

     [ https://issues.apache.org/jira/browse/HDFS-7748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anu Engineer updated HDFS-7748:
-------------------------------
    Attachment: hdfs-7748.005.patch

Changes :
1) Based on [~wheat9]'s suggestion added a long that binds the status and ECN ( flags) value
together is java code. This will hopefully help in debugging when we don't have to look for
these values in separate places.

2) Added a new test case of verify the above functionality

3) Made the flags a bit mask and a repeated unit64 in the protobuf space.



> 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
>
>
> 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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