VenkatSNarayanan commented on code in PR #339:
URL: https://github.com/apache/tez/pull/339#discussion_r1550306809


##########
tez-mapreduce/src/main/java/org/apache/tez/mapreduce/output/MROutput.java:
##########
@@ -413,6 +414,7 @@ protected List<Event> initializeBase() throws IOException, 
InterruptedException
     }
     jobConf.setInt(MRJobConfig.APPLICATION_ATTEMPT_ID,
         getContext().getDAGAttemptNumber());
+    jobConf.set(MRJobConfig.MR_JOB_UUID, 
Utils.createJobUUID(getContext().getApplicationId().getClusterTimestamp(), 
getContext().getApplicationId().getId(), getContext().getDagIdentifier()));

Review Comment:
   Addressed in update.



##########
tez-mapreduce/src/main/java/org/apache/tez/mapreduce/hadoop/MRJobConfig.java:
##########
@@ -131,6 +131,8 @@ public interface MRJobConfig {
 
   public static final String CACHE_ARCHIVES_VISIBILITIES = 
"mapreduce.job.cache.archives.visibilities";
 
+  public static final String MR_JOB_UUID = "mapreduce.job.uuid";

Review Comment:
   Added javadoc description.



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