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https://issues.apache.org/jira/browse/MAPREDUCE-5111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13620441#comment-13620441
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Hadoop QA commented on MAPREDUCE-5111:
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{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12576692/MAPREDUCE-5111.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-yarn-project/hadoop-yarn/hadoop-yarn-common.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3492//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3492//console
This message is automatically generated.
> RM address DNS lookup can cause unnecessary slowness on every JHS page load
> ----------------------------------------------------------------------------
>
> Key: MAPREDUCE-5111
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5111
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobhistoryserver
> Affects Versions: 2.0.3-alpha
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Attachments: MAPREDUCE-5111.patch
>
>
> When I run the job history server locally, every page load takes in the 10s
> of seconds. I profiled the process and discovered that all the extra time
> was spent inside YarnConfiguration#getRMWebAppURL, trying to resolve 0.0.0.0
> to a hostname. When I changed my yarn.resourcemanager.address to localhost,
> the page load times decreased drastically.
> There's no that we need to perform this resolution on every page load.
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