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From t...@apache.org
Subject svn commit: r1099847 - in /hadoop/mapreduce/trunk: CHANGES.txt src/java/org/apache/hadoop/mapreduce/Partitioner.java
Date Thu, 05 May 2011 15:40:43 GMT
Author: todd
Date: Thu May  5 15:40:42 2011
New Revision: 1099847

URL: http://svn.apache.org/viewvc?rev=1099847&view=rev
Log:
MAPREDUCE-2474. Add docs to the new API Partitioner on how to access the Job Configuration.
Contributed by Harsh J Chouraria.

Modified:
    hadoop/mapreduce/trunk/CHANGES.txt
    hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/Partitioner.java

Modified: hadoop/mapreduce/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/mapreduce/trunk/CHANGES.txt?rev=1099847&r1=1099846&r2=1099847&view=diff
==============================================================================
--- hadoop/mapreduce/trunk/CHANGES.txt (original)
+++ hadoop/mapreduce/trunk/CHANGES.txt Thu May  5 15:40:42 2011
@@ -74,6 +74,9 @@ Trunk (unreleased changes)
 
     MAPREDUCE-2420. JobTracker should be able to renew delegation token over 
     HTTP (Boris Shkolnik via jitendra)
+
+    MAPREDUCE-2474. Add docs to the new API Partitioner on how to access the
+    Job Configuration. (Harsh J Chouraria via todd)
     
   OPTIMIZATIONS
     

Modified: hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/Partitioner.java
URL: http://svn.apache.org/viewvc/hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/Partitioner.java?rev=1099847&r1=1099846&r2=1099847&view=diff
==============================================================================
--- hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/Partitioner.java (original)
+++ hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/Partitioner.java Thu May 
5 15:40:42 2011
@@ -20,6 +20,7 @@ package org.apache.hadoop.mapreduce;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.conf.Configurable;
 
 /** 
  * Partitions the key space.
@@ -31,6 +32,9 @@ import org.apache.hadoop.classification.
  * which of the <code>m</code> reduce tasks the intermediate key (and hence the

  * record) is sent for reduction.</p>
  * 
+ * Note: If you require your Partitioner class to obtain the Job's configuration
+ * object, implement the {@link Configurable} interface.
+ * 
  * @see Reducer
  */
 @InterfaceAudience.Public



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