HBASE-936 REST Interface: enable to get numbers of rows from scanner interface

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@708632 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/hadoop/hbase/client/Scanner.java

@@ -40,6 +40,13 @@ public interface Scanner extends Closeable, Iterable<RowResult> {
    */  
   public RowResult next() throws IOException;
   
+  /**
+   * @param nbRows number of rows to return
+   * @return Between zero and <param>nbRows</param> RowResults
+   * @throws IOException
+   */
+  public RowResult[] next(int nbRows) throws IOException;
+  
   /**
    * Closes the scanner and releases any resources it has allocated
    */