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https://issues.apache.org/jira/browse/HDFS-7210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14226841#comment-14226841
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Hadoop QA commented on HDFS-7210:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12683498/HDFS-7210-005.patch
against trunk revision 058af60.
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 2 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:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-hdfs-project/hadoop-hdfs:
org.apache.hadoop.hdfs.server.namenode.ha.TestRetryCacheWithHA
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/8847//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8847//console
This message is automatically generated.
> Avoid two separate RPC's namenode.append() and namenode.getFileInfo() for an
> append call from DFSClient
> -------------------------------------------------------------------------------------------------------
>
> Key: HDFS-7210
> URL: https://issues.apache.org/jira/browse/HDFS-7210
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs-client, namenode
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Attachments: HDFS-7210-001.patch, HDFS-7210-002.patch,
> HDFS-7210-003.patch, HDFS-7210-004.patch, HDFS-7210-005.patch
>
>
> Currently DFSClient does 2 RPCs to namenode for an append operation.
> {{append()}} for re-opening the file and getting the last block,
> {{getFileInfo()}} Another on to get HdfsFileState
> If we can combine result of these 2 calls and make one RPC, then it can
> reduce load on NameNode.
> For the backward compatibility we need to keep existing {{append()}} call as
> is
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