MAPREDUCE-5156. Change hadoop examples ProgramDriver to be able to run 1.x examples jar on top of YARN. This change breaks 0.23.x direct usages of ProgramDriver. Contributed by Zhijie Shen.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1485085 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/dev-support/findbugsExcludeFile.xml

@@ -100,6 +100,11 @@
        <Method name="run" />
        <Bug pattern="DM_EXIT" />
      </Match>
+     <Match>
+       <Class name="org.apache.hadoop.util.ProgramDriver" />
+       <Method name="driver" />
+       <Bug pattern="DM_EXIT" />
+     </Match>
      <!--
        We need to cast objects between old and new api objects
      -->

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ProgramDriver.java

@@ -117,7 +117,7 @@ public void addClass (String name, Class mainClass, String description) throws T
    * @throws IllegalArgumentException 
    * @throws Throwable Anything thrown by the example program's main
    */
-  public int driver(String[] args) 
+  public int run(String[] args)
     throws Throwable 
   {
     // Make sure they gave us a program name.
@@ -144,5 +144,14 @@ public int driver(String[] args)
     pgm.invoke(new_args);
     return 0;
   }
-    
+
+  /**
+   * API compatible with Hadoop 1.x
+   */
+  public void driver(String[] argv) throws Throwable {
+    if (run(argv) == -1) {
+      System.exit(-1);
+    }
+  }
+
 }

hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/CoreTestDriver.java

@@ -52,7 +52,7 @@ public CoreTestDriver(ProgramDriver pgd) {
   public void run(String argv[]) {
     int exitCode = -1;
     try {
-      exitCode = pgd.driver(argv);
+      exitCode = pgd.run(argv);
     } catch(Throwable e) {
       e.printStackTrace();
     }

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/test/HdfsTestDriver.java

@@ -47,7 +47,7 @@ public HdfsTestDriver(ProgramDriver pgd) {
   public void run(String argv[]) {
     int exitCode = -1;
     try {
-      exitCode = pgd.driver(argv);
+      exitCode = pgd.run(argv);
     } catch(Throwable e) {
       e.printStackTrace();
     }

hadoop-mapreduce-project/CHANGES.txt

@@ -179,6 +179,10 @@ Release 2.0.5-beta - UNRELEASED
     compatibility with mapred in 1.x but incompatible with 0.23.x. (Mayank Bansal
     via vinodkv)
 
+    MAPREDUCE-5156. Change hadoop examples ProgramDriver to be able to run
+    1.x examples jar on top of YARN. This change breaks 0.23.x direct usages of
+    ProgramDriver. (Zhijie Shen via vinodkv)
+
   NEW FEATURES
 
   IMPROVEMENTS

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

@@ -112,7 +112,7 @@ public MapredTestDriver(ProgramDriver pgd) {
   public void run(String argv[]) {
     int exitCode = -1;
     try {
-      exitCode = pgd.driver(argv);
+      exitCode = pgd.run(argv);
     } catch(Throwable e) {
       e.printStackTrace();
     }

hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/ExampleDriver.java

@@ -71,7 +71,7 @@ public static void main(String argv[]){
       pgd.addClass("teragen", TeraGen.class, "Generate data for the terasort");
       pgd.addClass("terasort", TeraSort.class, "Run the terasort");
       pgd.addClass("teravalidate", TeraValidate.class, "Checking results of terasort");
-      exitCode = pgd.driver(argv);
+      exitCode = pgd.run(argv);
     }
     catch(Throwable e){
       e.printStackTrace();