Milesian111 commented on code in PR #29033:
URL: https://github.com/apache/flink/pull/29033#discussion_r3889921546
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flink-python/pyflink/dataframe/dataframe.py:
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@@ -542,6 +542,85 @@ def drop_duplicates(
distinct = drop_duplicates
unique = drop_duplicates
+ # ======================== Slicing ========================
+
+ @PublicEvolving()
+ def limit(self, n: int) -> "DataFrame":
+ """
+ Keep at most the first ``n`` rows.
+
+ This is a lazy transformation. Row order is deterministic only when
the underlying table
+ has an explicit ordering.
Review Comment:
I have pushed a follow-up commit that clarifies the lazy transformation
semantics and the ordering behavior for limit, offset, and head.
Sorting support remains tracked separately by FLINK-40421, so I did not add a
separate DataFrame.order_by() API to this PR.
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