[jira] [Updated] (HDFS-13331) Add lastSeenStateId to RpcRequestHeader.

["Plamen Jeliazkov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-13331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Plamen Jeliazkov updated HDFS-13331:
------------------------------------
    Attachment: HDFS_13331.trunk.000.patch

> Add lastSeenStateId to RpcRequestHeader.
> ----------------------------------------
>
>                 Key: HDFS-13331
>                 URL: https://issues.apache.org/jira/browse/HDFS-13331
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Plamen Jeliazkov
>            Assignee: Plamen Jeliazkov
>            Priority: Major
>         Attachments: 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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