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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13665) Move RPC response serialization into Server.doResponse
Date Wed, 27 Jun 2018 02:21:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16524466#comment-16524466

Konstantin Shvachko commented on HDFS-13665:

+1 looks good.

> Move RPC response serialization into Server.doResponse
> ------------------------------------------------------
>                 Key: HDFS-13665
>                 URL: https://issues.apache.org/jira/browse/HDFS-13665
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: HDFS-12943
>            Reporter: Plamen Jeliazkov
>            Assignee: Plamen Jeliazkov
>            Priority: Major
>         Attachments: HDFS-13665-HDFS-12943.000.patch, HDFS-13665-HDFS-12943.001.patch
> In HDFS-13399 we addressed a race condition in AlignmentContext processing where the
RPC response would assign a transactionId independently of the transactions own processing,
resulting in a stateId response that was lower than expected. However this caused us to serialize
the RpcResponse twice in order to address the header field change.
> See here:
> https://issues.apache.org/jira/browse/HDFS-13399?focusedCommentId=16464279&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16464279
> And here:
> https://issues.apache.org/jira/browse/HDFS-13399?focusedCommentId=16498660&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16498660
> At the end it was agreed upon to move the logic of Server.setupResponse into Server.doResponse

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