Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/5709#discussion_r29116363
--- Diff: python/pyspark/sql/functions.py ---
@@ -103,8 +103,28 @@ def countDistinct(col, *cols):
return Column(jc)
+def monotonicallyIncreasingId():
+ """A column that generates monotonically increasing 64-bit integers.
+
+ The generated ID is guaranteed by be monotonically increasing and
unique, but not consecutive.
--- End diff --
guaranteed TO be
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