HADOOP-15166 CLI MiniCluster fails with ClassNotFoundException o.a.h.yarn.server.timelineservice.collector.TimelineCollectorManager. Contributed by Gera Shegalov

hadoop-common-project/hadoop-common/src/site/markdown/CLIMiniCluster.md.vm

@@ -41,7 +41,7 @@ Running the MiniCluster
 
 From inside the root directory of the extracted tarball, you can start the CLI MiniCluster using the following command:
 
-    $ HADOOP_CLASSPATH=share/hadoop/yarn/test/hadoop-yarn-server-tests-${project.version}-tests.jar bin/hadoop jar ./share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-${project.version}-tests.jar minicluster -rmport RM_PORT -jhsport JHS_PORT
+    $ bin/mapred minicluster -rmport RM_PORT -jhsport JHS_PORT
 
 In the example command above, `RM_PORT` and `JHS_PORT` should be replaced by the user's choice of these port numbers. If not specified, random free ports will be used.
 

hadoop-mapreduce-project/bin/mapred

@@ -36,6 +36,7 @@ function hadoop_usage
   hadoop_add_subcommand "sampler" client "sampler"
   hadoop_add_subcommand "frameworkuploader" admin "mapreduce framework upload"
   hadoop_add_subcommand "version" client "print the version"
+  hadoop_add_subcommand "minicluster" client "CLI MiniCluster"
   hadoop_generate_usage "${HADOOP_SHELL_EXECNAME}" true
 }
 
@@ -101,6 +102,11 @@ function mapredcmd_case
     version)
       HADOOP_CLASSNAME=org.apache.hadoop.util.VersionInfo
     ;;
+    minicluster)
+      hadoop_add_classpath "${HADOOP_YARN_HOME}/${YARN_DIR}/timelineservice"'/*'
+      hadoop_add_classpath "${HADOOP_YARN_HOME}/${YARN_DIR}/test"'/*'
+      HADOOP_CLASSNAME=org.apache.hadoop.mapreduce.MiniHadoopClusterManager
+    ;;
     *)
       HADOOP_CLASSNAME="${subcmd}"
       if ! hadoop_validate_classname "${HADOOP_CLASSNAME}"; then