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https://issues.apache.org/jira/browse/HDFS-4353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13543416#comment-13543416
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Hadoop QA commented on HDFS-4353:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12563135/02-cumulative.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 7 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}.  The javadoc tool did not generate any 
warning messages.

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

    {color:red}-1 findbugs{color}.  The patch appears to introduce 1 new 
Findbugs (version 1.3.9) 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-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs:

                  org.apache.hadoop.ha.TestZKFailoverController
                  org.apache.hadoop.ha.TestActiveStandbyElectorRealZK
                  org.apache.hadoop.ha.TestZKFailoverControllerStress
                  org.apache.hadoop.hdfs.TestConnCache
                  org.apache.hadoop.hdfs.TestDatanodeDeath
                  org.apache.hadoop.hdfs.TestFileAppend2
                  
org.apache.hadoop.hdfs.server.namenode.ha.TestDFSZKFailoverController
                  
org.apache.hadoop.hdfs.server.balancer.TestBalancerWithHANameNodes

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

Test results: 
https://builds.apache.org/job/PreCommit-HDFS-Build/3720//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HDFS-Build/3720//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-hdfs.html
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/3720//console

This message is automatically generated.
                
> Encapsulate connections to peers in Peer and PeerServer classes
> ---------------------------------------------------------------
>
>                 Key: HDFS-4353
>                 URL: https://issues.apache.org/jira/browse/HDFS-4353
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, hdfs-client
>    Affects Versions: 2.0.3-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: 02-cumulative.patch
>
>
> Encapsulate connections to peers into the {{Peer}} and {{PeerServer}} 
> classes.  Since many Java classes may be involved with these connections, it 
> makes sense to create a container for them.  For example, a connection to a 
> peer may have an input stream, output stream, readablebytechannel, encrypted 
> output stream, and encrypted input stream associated with it.
> This makes us less dependent on the {{NetUtils}} methods which use 
> {{instanceof}} to manipulate socket and stream states based on the runtime 
> type.  it also paves the way to introduce UNIX domain sockets which don't 
> inherit from {{java.net.Socket}}.

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