Adding missing file from HADOOP-434.

git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk@432631 13f79535-47bb-0310-9956-ffa450edef68

src/contrib/smallJobsBenchmark/src/java/org/apache/hadoop/benchmarks/mapred/BenchmarkRunner.java

@@ -0,0 +1,23 @@
+package org.apache.hadoop.benchmarks.mapred;
+
+
+import org.apache.hadoop.util.ProgramDriver;
+/**
+ * Driver for benchmark. 
+ * @author sanjaydahiya
+ *
+ */
+public class BenchmarkRunner {
+  
+  public static void main(String argv[]){
+    ProgramDriver pgd = new ProgramDriver();
+    try {
+      pgd.addClass("smallJobsBenchmark", MultiJobRunner.class, 
+      "A map/reduce benchmark that creates many small jobs");
+      pgd.driver(argv);
+    }
+    catch(Throwable e){
+      e.printStackTrace();
+    }
+  }
+}