From 1177942a573e821098913586cce158fca27bcb7f Mon Sep 17 00:00:00 2001 From: Eric Chiang Date: Mon, 20 Apr 2015 13:30:33 -0400 Subject: [PATCH] fixed doc --- docs/programming-guide.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/programming-guide.md b/docs/programming-guide.md index f4fabb0927b66..27816515c5de2 100644 --- a/docs/programming-guide.md +++ b/docs/programming-guide.md @@ -1093,7 +1093,7 @@ for details. ### Shuffle operations Certain operations within Spark trigger an event known as the shuffle. The shuffle is Spark's -mechanism for re-distributing data so that is grouped differently across partitions. This typically +mechanism for re-distributing data so that it's grouped differently across partitions. This typically involves copying data across executors and machines, making the shuffle a complex and costly operation.