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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3408) yarn-daemon.sh unconditionnaly sets yarn.root.logger
Date Fri, 18 Nov 2011 20:54:51 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153116#comment-13153116

Hadoop QA commented on MAPREDUCE-3408:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  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.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    -1 core tests.  The patch failed these unit tests:

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1322//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1322//console

This message is automatically generated.
> yarn-daemon.sh unconditionnaly sets yarn.root.logger
> ----------------------------------------------------
>                 Key: MAPREDUCE-3408
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3408
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2, nodemanager, resourcemanager
>    Affects Versions: 0.23.0, 0.23.1
>            Reporter: Bruno Mahé
>            Assignee: Bruno Mahé
>              Labels: bigtop
>         Attachments: MAPREDUCE-3408.patch
> yarn-daemon.sh unconditionnaly sets yarn.root.logger which then prevent any override
from happening.
> From ./hadoop-mapreduce-project/hadoop-yarn/bin/yarn-daemon.sh:
> and then yarn-daemon.sh will call "$YARN_HOME"/bin/yarn which does the following:
> > YARN_OPTS="$YARN_OPTS -Dhadoop.root.logger=${YARN_ROOT_LOGGER:-INFO,console}"
> > YARN_OPTS="$YARN_OPTS -Dyarn.root.logger=${YARN_ROOT_LOGGER:-INFO,console}"
> This has at least 2 issues:
> * I cannot override hadoop.root.logger when using the yarn-daemon.sh script
> * I cannot have different values for hadoop.root.logger and yarn.root.logger
> I currently see two different ways to proceed forward:
> 1/ Make the script yarn-daemon.sh only sets a default value for YARN_ROOT_LOGGER if this
variable is not defined
> 2/ Remove the quoted code from yarn-daemon.sh since yarn already does something similar
> 3/ Entirely remove that chunk and let people define their logging however they want through
some properties files (see log4j.properties in the conf directories for instance)
> I would also use the variable HADOOP_ROOT_LOGGER for hadoop.root.logger if either option
1/ or 2/ would be taken.
> I don't really have any preference toward any of these solutions. What would you recommend?
What is the Apache Hadoop way for this matter?
> Note: This is probably happening as well for the other daemons, and I will take a look
at it once this issue is resolved.

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