SPARK-1322, top in pyspark should sort result in descending order.

Author: Prashant Sharma <prashant.s@imaginea.com>

Closes #235 from ScrapCodes/SPARK-1322/top-rev-sort and squashes the following commits:

f316266 [Prashant Sharma] Minor change in comment.
58e58c6 [Prashant Sharma] SPARK-1322, top in pyspark should sort result in descending order.

1 files changed, 3 insertions, 3 deletions

diff --git a/python/pyspark/rdd.py b/python/pyspark/rdd.py
index ca2dc119a4..019c249699 100644
--- a/python/pyspark/rdd.py
+++ b/python/pyspark/rdd.py
@@ -693,11 +693,11 @@ class RDD(object):
         """
         Get the top N elements from a RDD.
 
-        Note: It returns the list sorted in ascending order.
+        Note: It returns the list sorted in descending order.
         >>> sc.parallelize([10, 4, 2, 12, 3]).top(1)
         [12]
         >>> sc.parallelize([2, 3, 4, 5, 6]).cache().top(2)
-        [5, 6]
+        [6, 5]
         """
         def topIterator(iterator):
             q = []
@@ -711,7 +711,7 @@ class RDD(object):
         def merge(a, b):
             return next(topIterator(a + b))
 
-        return sorted(self.mapPartitions(topIterator).reduce(merge))
+        return sorted(self.mapPartitions(topIterator).reduce(merge), reverse=True)
 
     def take(self, num):
         """