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From "Plamen Jeliazkov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13331) Add lastSeenStateId to RpcRequestHeader.
Date Mon, 02 Apr 2018 18:01:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16422883#comment-16422883

Plamen Jeliazkov commented on HDFS-13331:

Thanks [~xkrogen] -- I debated whether to do the static field work now or in follow-up for
a while and I think in follow-up will help make my patch more focused. I think I am able to
do it by passing it through {{Call}} object though.

As for your points, I agree with them except that for (1) I do not intend the log statement
to last long and therefore would opt not to rely on a log capture. Log capture tests are a
little hacky as well. If you would really like me to remove the {{@Ignored}} however I can
just remove it for now and update the test later.

> 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.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

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