Merge -r 1171900:1171901 from trunk to branch-0.23 to fix MAPREDUCE-2987.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1171902 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -1304,6 +1304,9 @@ Release 0.23.0 - Unreleased
     MAPREDUCE-3007. Fixed Yarn Mapreduce client to be able to connect to 
     JobHistoryServer in secure mode. (vinodkv)
 
+    MAPREDUCE-2987. Fixed display of logged user on RM Web-UI. (Thomas Graves
+    via acmurthy)
+
 Release 0.22.0 - Unreleased
 
   INCOMPATIBLE CHANGES

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/JobContextImpl.java

@@ -27,6 +27,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.conf.Configuration.IntegerRanges;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.io.RawComparator;
+import org.apache.hadoop.mapred.JobConf;
 import org.apache.hadoop.mapreduce.InputFormat;
 import org.apache.hadoop.mapreduce.Job;
 import org.apache.hadoop.mapreduce.JobContext;
@@ -60,7 +61,11 @@ public class JobContextImpl implements JobContext {
   protected final Credentials credentials;
   
   public JobContextImpl(Configuration conf, JobID jobId) {
+    if (conf instanceof JobConf) {
+      this.conf = (JobConf)conf;
+    } else {
       this.conf = new org.apache.hadoop.mapred.JobConf(conf);
+    }
     this.jobId = jobId;
     this.credentials = this.conf.getCredentials();
     try {

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/main/java/org/apache/hadoop/mapred/YARNRunner.java

@@ -223,23 +223,10 @@ public class YARNRunner implements ClientProtocol {
       throw new YarnException(e);
     }
 
-    // XXX Remove
-    Path submitJobDir = new Path(jobSubmitDir);
-    FileContext defaultFS = FileContext.getFileContext(conf);
-    Path submitJobFile =
-      defaultFS.makeQualified(JobSubmissionFiles.getJobConfPath(submitJobDir));
-    FSDataInputStream in = defaultFS.open(submitJobFile);
-    conf.addResource(in);
-    // ---
-
     // Construct necessary information to start the MR AM
     ApplicationSubmissionContext appContext = 
       createApplicationSubmissionContext(conf, jobSubmitDir, ts);
     
-    // XXX Remove
-    in.close();
-    // ---
-    
     // Submit to ResourceManager
     ApplicationId applicationId = resMgrDelegate.submitApplication(appContext);
     

hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/webapp/view/HeaderBlock.java

@@ -23,10 +23,14 @@ import static org.apache.hadoop.yarn.webapp.Params.*;
 public class HeaderBlock extends HtmlBlock {
 
   @Override protected void render(Block html) {
+    String loggedIn = ""; 
+    if (request().getRemoteUser() != null) {
+      loggedIn = "Logged in as: " + request().getRemoteUser();
+    }
     html.
       div("#header.ui-widget").
         div("#user").
-          _("Logged in as: "+ request().getRemoteUser())._().
+          _(loggedIn)._().
         div("#logo").
           img("/static/hadoop-st.png")._().
         h1($(TITLE))._();