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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10300) Allowed deferred sending of call responses
Date Thu, 14 Aug 2014 19:30:20 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10300?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14097486#comment-14097486
] 

Hadoop QA commented on HADOOP-10300:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12661760/HADOOP-10300.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-common.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/4473//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/4473//console

This message is automatically generated.

> Allowed deferred sending of call responses
> ------------------------------------------
>
>                 Key: HADOOP-10300
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10300
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ipc
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HADOOP-10300.patch
>
>
> RPC handlers currently do not return until the RPC call completes and response is sent,
or a partially sent response has been queued for the responder.  It would be useful for a
proxy method to notify the handler to not yet the send the call's response.
> An potential use case is a namespace handler in the NN might want to return before the
edit log is synced so it can service more requests and allow increased batching of edits per
sync.  Background syncing could later trigger the sending of the call response to the client.



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