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https://issues.apache.org/jira/browse/MAPREDUCE-987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419702#comment-13419702
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Hudson commented on MAPREDUCE-987:
----------------------------------
Integrated in Hadoop-Mapreduce-trunk-Commit #2531 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2531/])
MAPREDUCE-987. Exposing MiniDFS and MiniMR clusters as a single process
command-line. (ahmed via tucu) (Revision 1364020)
Result = FAILURE
tucu : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1364020
Files :
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/MiniHadoopClusterManager.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/test/MapredTestDriver.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/CLIMiniCluster.apt.vm
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site/src/site/apt/index.apt.vm
> Exposing MiniDFS and MiniMR clusters as a single process command-line
> ---------------------------------------------------------------------
>
> Key: MAPREDUCE-987
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-987
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: build, test
> Reporter: Philip Zeyliger
> Assignee: Philip Zeyliger
> Priority: Minor
> Attachments: HDFS-621-0.20-patch, HDFS-621.patch,
> MAPREDUCE-987.patch, MAPREDUCE-987.patch, MAPREDUCE-987_branch-1.0.patch,
> MAPREDUCE-987_rev2.patch, MAPREDUCE-987_rev3.patch, MAPREDUCE-987_rev4.patch
>
>
> It's hard to test non-Java programs that rely on significant mapreduce
> functionality. The patch I'm proposing shortly will let you just type
> "bin/hadoop jar hadoop-hdfs-hdfswithmr-test.jar minicluster" to start a
> cluster (internally, it's using Mini{MR,HDFS}Cluster) with a specified number
> of daemons, etc. A test that checks how some external process interacts with
> Hadoop might start minicluster as a subprocess, run through its thing, and
> then simply kill the java subprocess.
> I've been using just such a system for a couple of weeks, and I like it.
> It's significantly easier than developing a lot of scripts to start a
> pseudo-distributed cluster, and then clean up after it. I figure others
> might find it useful as well.
> I'm at a bit of a loss as to where to put it in 0.21. hdfs-with-mr tests
> have all the required libraries, so I've put it there. I could conceivably
> split this into "minimr" and "minihdfs", but it's specifically the fact that
> they're configured to talk to each other that I like about having them
> together. And one JVM is better than two for my test programs.
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