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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11506) Configuration.get() is unnecessarily slow
Date Mon, 02 Feb 2015 22:05:38 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14302026#comment-14302026

Hadoop QA commented on HADOOP-11506:

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision 5f9a0dd.

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

    {color:green}+1 tests included{color}.  The patch appears to include 1 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:green}+1 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-common.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/5559//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/5559//console

This message is automatically generated.

> Configuration.get() is unnecessarily slow
> -----------------------------------------
>                 Key: HADOOP-11506
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11506
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Dmitriy V. Ryaboy
>            Assignee: Gera Shegalov
>         Attachments: HADOOP-11506.001.patch, HADOOP-11506.002.patch, HADOOP-11506.003.patch,
> Profiling several large Hadoop jobs, we discovered that a surprising amount of time was
spent inside Configuration.get, more specifically, in regex matching caused by the substituteVars

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