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2 changes: 1 addition & 1 deletion docs/programming-guide.md
Original file line number Diff line number Diff line change
Expand Up @@ -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.

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