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https://issues.apache.org/jira/browse/HADOOP-7346?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044059#comment-13044059
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Hadoop QA commented on HADOOP-7346:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12481406/hadoop-7346.txt
against trunk revision 1130833.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9)
warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results:
https://builds.apache.org/hudson/job/PreCommit-HADOOP-Build/573//testReport/
Findbugs warnings:
https://builds.apache.org/hudson/job/PreCommit-HADOOP-Build/573//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://builds.apache.org/hudson/job/PreCommit-HADOOP-Build/573//console
This message is automatically generated.
> Send back nicer error to clients using outdated IPC version
> -----------------------------------------------------------
>
> Key: HADOOP-7346
> URL: https://issues.apache.org/jira/browse/HADOOP-7346
> Project: Hadoop Common
> Issue Type: Improvement
> Components: ipc
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.22.0
>
> Attachments: hadoop-7346.txt, hadoop-7346.txt, hadoop-7346.txt
>
>
> When an older Hadoop version tries to contact a newer Hadoop version across
> an IPC protocol version bump, the client currently just gets a non-useful
> error message like "EOFException".
> Instead, the IPC server code can speak just enough of prior IPC protocols to
> send back a "fatal" message indicating the version mismatch.
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