removed lambda from sortByKey()

According to the documentation the sortByKey method does not take a lambda as an argument, thus the example is flawed. Removed the argument completely as this will default to ascending sort.

Author: Udo Klein <git@blinkenlight.net>

Closes #10640 from udoklein/patch-1.

examples/src/main/python/sort.py

@@ -30,7 +30,7 @@ if __name__ == "__main__":
     lines = sc.textFile(sys.argv[1], 1)
     sortedCount = lines.flatMap(lambda x: x.split(' ')) \
         .map(lambda x: (int(x), 1)) \
-        .sortByKey(lambda x: x)
+        .sortByKey()
     # This is just a demo on how to bring all the sorted data back to a single node.
     # In reality, we wouldn't want to collect all the data to the driver node.
     output = sortedCount.collect()