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https://issues.apache.org/jira/browse/HDFS-1583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12996742#comment-12996742
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Hadoop QA commented on HDFS-1583:
---------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12468458/test-rpc.diff
against trunk revision 1072023.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 9 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 generated 3 release audit warnings
(more than the trunk's current 0 warnings).
+1 core tests. The patch passed core unit tests.
-1 contrib tests. The patch failed contrib unit tests.
+1 system test framework. The patch passed system test framework compile.
Test results:
https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/176//testReport/
Release audit warnings:
https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/176//artifact/trunk/patchprocess/patchReleaseAuditProblems.txt
Findbugs warnings:
https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/176//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
https://hudson.apache.org/hudson/job/PreCommit-HDFS-Build/176//console
This message is automatically generated.
> Improve backup-node sync performance by wrapping RPC parameters
> ---------------------------------------------------------------
>
> Key: HDFS-1583
> URL: https://issues.apache.org/jira/browse/HDFS-1583
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Reporter: Liyin Liang
> Assignee: Liyin Liang
> Fix For: 0.23.0
>
> Attachments: HDFS-1583-1.patch, HDFS-1583-2.patch, test-rpc.diff
>
>
> The journal edit records are sent by the active name-node to the backup-node
> with RPC:
> {code:}
> public void journal(NamenodeRegistration registration,
> int jAction,
> int length,
> byte[] records) throws IOException;
> {code}
> During the name-node throughput benchmark, the size of byte array _records_
> is around *8000*. Then the serialization and deserialization is
> time-consuming. I wrote a simple application to test RPC with byte array
> parameter. When the size got to 8000, each RPC call need about 6 ms. While
> name-node sync 8k byte to local disk only need 0.3~0.4ms.
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