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From "Plamen Jeliazkov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13331) Add lastSeenStateId to RpcRequestHeader.
Date Wed, 04 Apr 2018 16:21:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16425797#comment-16425797
] 

Plamen Jeliazkov commented on HDFS-13331:
-----------------------------------------

Oh, whoops. Good catch, [~xkrogen]. No that was not intentional. I've restored it and uploaded
a new, v005 patch.

> Add lastSeenStateId to RpcRequestHeader.
> ----------------------------------------
>
>                 Key: HDFS-13331
>                 URL: https://issues.apache.org/jira/browse/HDFS-13331
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-12943
>            Reporter: Plamen Jeliazkov
>            Assignee: Plamen Jeliazkov
>            Priority: Major
>         Attachments: HDFS-13331-HDFS-12943.002.patch, HDFS-13331-HDFS-12943.003..patch,
HDFS-13331-HDFS-12943.004.patch, HDFS-13331-HDFS-12943.005.patch, HDFS-13331.trunk.001.patch,
HDFS_13331.trunk.000.patch
>
>
> HDFS-12977 added a stateId into the RpcResponseHeader which is returned by NameNode and
stored by DFSClient.
> This JIRA is to followup on that work and have the DFSClient send their stored "lastSeenStateId"
in the RpcRequestHeader so that ObserverNodes can then compare with their own and act accordingly.
> This JIRA work focuses on just the part of making DFSClient send their state through
RpcRequestHeader.



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