MAPREDUCE-3365. Uncomment the FairScheduler event-logging debug opts. Contributed by Sho Shimauchi.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-security@1199059 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -59,6 +59,7 @@ Release 0.20.206.0 - unreleased
     MAPREDUCE-3287. Fix a busy loop in ReduceTask that would cause 100%
     cpu utilization during the fetch phase. (todd)
 
+    MAPREDUCE-3365. Expose the event-logging debug feature of FairScheduler. (Sho Shimauchi via harsh)
 
 Release 0.20.205.1 - unreleased
 

src/docs/src/documentation/content/xdocs/fair_scheduler.xml

@@ -324,7 +324,6 @@
           Hadoop's default algorithms from JobInProgress.
           </td>
           </tr>
-          <!--
           <tr>
           <td>
             mapred.fairscheduler.eventlog.enabled
@@ -333,6 +332,7 @@
             Enable a detailed log of fair scheduler events, useful for
             debugging.
             This log is stored in <em>HADOOP_LOG_DIR/fairscheduler</em>.
+	    <strong>NOTICE: This setting is for experts only.</strong>
             Boolean value, default: false.
           </td>
           </tr>
@@ -343,10 +343,10 @@
           <td>
             If using the event log, this is the interval at which to dump
             complete scheduler state (list of pools and jobs) to the log.
+	    <strong>NOTICE: This setting is for experts only.</strong>
             Integer value in milliseconds, default: 10000.
           </td>
           </tr>
-          -->
         </table>
       </section>  
       <section>