MAPREDUCE-7190. Add SleepJob additional parameter to make parallel runs distinguishable. Contributed by Adam Antal.

Signed-off-by: Wei-Chiu Chuang <weichiu@apache.org>

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/SleepJob.java

@@ -49,6 +49,8 @@ public class SleepJob extends Configured implements Tool {
   public static String REDUCE_SLEEP_TIME = 
     "mapreduce.sleepjob.reduce.sleep.time";
 
+  public static final String SLEEP_JOB_NAME = "Sleep job";
+
   public static class SleepJobPartitioner extends 
       Partitioner<IntWritable, NullWritable> {
     public int getPartition(IntWritable k, NullWritable v, int numPartitions) {
@@ -195,9 +197,17 @@ public class SleepJob extends Configured implements Tool {
     System.exit(res);
   }
 
+  public Job createJob(int numMapper, int numReducer,
+      long mapSleepTime, int mapSleepCount,
+      long reduceSleepTime, int reduceSleepCount) throws IOException {
+    return createJob(numMapper, numReducer, mapSleepTime, mapSleepCount,
+        reduceSleepTime, reduceSleepCount, SLEEP_JOB_NAME);
+  }
+
   public Job createJob(int numMapper, int numReducer,
                        long mapSleepTime, int mapSleepCount, 
-                       long reduceSleepTime, int reduceSleepCount) 
+                       long reduceSleepTime, int reduceSleepCount,
+                       String name)
       throws IOException {
     Configuration conf = getConf();
     conf.setLong(MAP_SLEEP_TIME, mapSleepTime);
@@ -205,7 +215,7 @@ public class SleepJob extends Configured implements Tool {
     conf.setInt(MAP_SLEEP_COUNT, mapSleepCount);
     conf.setInt(REDUCE_SLEEP_COUNT, reduceSleepCount);
     conf.setInt(MRJobConfig.NUM_MAPS, numMapper);
-    Job job = Job.getInstance(conf, "sleep");
+    Job job = Job.getInstance(conf);
     job.setNumReduceTasks(numReducer);
     job.setJarByClass(SleepJob.class);
     job.setMapperClass(SleepMapper.class);
@@ -216,7 +226,11 @@ public class SleepJob extends Configured implements Tool {
     job.setInputFormatClass(SleepInputFormat.class);
     job.setPartitionerClass(SleepJobPartitioner.class);
     job.setSpeculativeExecution(false);
-    job.setJobName("Sleep job");
+    if (SLEEP_JOB_NAME.equals(name)) {
+      job.setJobName(SLEEP_JOB_NAME);
+    } else {
+      job.setJobName(SLEEP_JOB_NAME + " - " + name);
+    }
     FileInputFormat.addInputPath(job, new Path("ignored"));
     return job;
   }
@@ -230,6 +244,7 @@ public class SleepJob extends Configured implements Tool {
     int numMapper = 1, numReducer = 1;
     long mapSleepTime = 100, reduceSleepTime = 100, recSleepTime = 100;
     int mapSleepCount = 1, reduceSleepCount = 1;
+    String name = SLEEP_JOB_NAME;
 
     for(int i=0; i < args.length; i++ ) {
       if(args[i].equals("-m")) {
@@ -262,6 +277,8 @@ public class SleepJob extends Configured implements Tool {
         if (recSleepTime < 0) {
           return printUsage(recSleepTime + ": recordSleepTime must be >= 0");
         }
+      } else if (args[i].equals("-name")) {
+        name = args[++i];
       }
     }
     
@@ -269,7 +286,7 @@ public class SleepJob extends Configured implements Tool {
     mapSleepCount = (int)Math.ceil(mapSleepTime / ((double)recSleepTime));
     reduceSleepCount = (int)Math.ceil(reduceSleepTime / ((double)recSleepTime));
     Job job = createJob(numMapper, numReducer, mapSleepTime,
-                mapSleepCount, reduceSleepTime, reduceSleepCount);
+        mapSleepCount, reduceSleepTime, reduceSleepCount, name);
     return job.waitForCompletion(true) ? 0 : 1;
   }
 
@@ -279,7 +296,7 @@ public class SleepJob extends Configured implements Tool {
     }
     System.err.println("SleepJob [-m numMapper] [-r numReducer]" +
         " [-mt mapSleepTime (msec)] [-rt reduceSleepTime (msec)]" +
-        " [-recordt recordSleepTime (msec)]");
+        " [-recordt recordSleepTime (msec)] [-name]");
     ToolRunner.printGenericCommandUsage(System.err);
     return 2;
   }

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestMRJobs.java

@@ -1379,4 +1379,19 @@ public class TestMRJobs {
       }
     }
   }
+
+  @Test
+  public void testSleepJobName() throws IOException {
+    SleepJob sleepJob = new SleepJob();
+    sleepJob.setConf(conf);
+
+    Job job1 = sleepJob.createJob(1, 1, 1, 1, 1, 1);
+    Assert.assertEquals("Wrong default name of sleep job.",
+        job1.getJobName(), SleepJob.SLEEP_JOB_NAME);
+
+    String expectedJob2Name = SleepJob.SLEEP_JOB_NAME + " - test";
+    Job job2 = sleepJob.createJob(1, 1, 1, 1, 1, 1, "test");
+    Assert.assertEquals("Wrong name of sleep job.",
+        job2.getJobName(), expectedJob2Name);
+  }
 }