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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2013/01/04 17:50:14 UTC
[jira] [Commented] (MAPREDUCE-4458) Warn if java.library.path is
used for AM or Task
[ https://issues.apache.org/jira/browse/MAPREDUCE-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544015#comment-13544015 ]
Hadoop QA commented on MAPREDUCE-4458:
--------------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12563106/MAPREDUCE-4458-2.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 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}. 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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3196//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/3196//console
This message is automatically generated.
> Warn if java.library.path is used for AM or Task
> ------------------------------------------------
>
> Key: MAPREDUCE-4458
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4458
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 0.23.3, 3.0.0, 2.0.2-alpha
> Reporter: Robert Joseph Evans
> Assignee: Robert Parker
> Attachments: MAPREDUCE-4458-2.patch, MAPREDUCE-4458.patch
>
>
> If java.library.path is used on the command line for launching an MRAppMaster or an MR Task, it could conflict with how standard Hadoop/HDFS JNI libraries and dependencies are found. At a minimum the client should output a warning and ask the user to switch to LD_LIBRARY_PATH. It would be nice to automatically do this for them but parsing the command line is scary so just a warning is probably good enough for now.
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