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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5677) Need error checking for HA cluster configuration
Date Fri, 10 Jan 2014 01:09:50 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867377#comment-13867377
] 

Hadoop QA commented on HDFS-5677:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12622277/HDFS-5677.patch
  against trunk revision .

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {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:green}+1 findbugs{color}.  The patch does not introduce any 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:green}+1 core tests{color}.  The patch passed unit tests in hadoop-hdfs-project/hadoop-hdfs.

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

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/5857//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/5857//console

This message is automatically generated.

> Need error checking for HA cluster configuration
> ------------------------------------------------
>
>                 Key: HDFS-5677
>                 URL: https://issues.apache.org/jira/browse/HDFS-5677
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, ha
>    Affects Versions: 2.0.6-alpha
>         Environment: centos6.5, oracle jdk6 45, 
>            Reporter: Vincent Sheffer
>            Assignee: Vincent Sheffer
>            Priority: Minor
>             Fix For: 3.0.0, 2.3.0
>
>         Attachments: HDFS-5677.patch
>
>
> If a node is declared in the *dfs.ha.namenodes.myCluster* but is _not_ later defined
in subsequent *dfs.namenode.servicerpc-address.myCluster.nodename* or *dfs.namenode.rpc-address.myCluster.XXX*
properties no error or warning message is provided to indicate that.
> The only indication of a problem is a log message like the following:
> {code}
> WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Problem connecting to server: myCluster:8020
> {code}
> Another way to look at this is that no error or warning is provided when a servicerpc-address/rpc-address
property is defined for a node without a corresponding node declared in *dfs.ha.namenodes.myCluster*.
> This arose when I had a typo in the *dfs.ha.namenodes.myCluster* property for one of
my node names.  It would be very helpful to have at least a warning message on startup if
there is a configuration problem like this.



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