Github user zero323 commented on a diff in the pull request: https://github.com/apache/spark/pull/17077#discussion_r110699779 --- Diff: python/pyspark/sql/tests.py --- @@ -2167,6 +2167,61 @@ def test_BinaryType_serialization(self): df = self.spark.createDataFrame(data, schema=schema) df.collect() + def test_bucketed_write(self): + data = [ + (1, "foo", 3.0), (2, "foo", 5.0), + (3, "bar", -1.0), (4, "bar", 6.0), + ] + df = self.spark.createDataFrame(data, ["x", "y", "z"]) + + # Test write with one bucketing column + df.write.bucketBy(3, "x").mode("overwrite").saveAsTable("pyspark_bucket") + self.assertEqual( + len([c for c in self.spark.catalog.listColumns("pyspark_bucket") + if c.name == "x" and c.isBucket]), + 1 + ) + self.assertSetEqual(set(data), set(self.spark.table("pyspark_bucket").collect())) + + # Test write two bucketing columns + df.write.bucketBy(3, "x", "y").mode("overwrite").saveAsTable("pyspark_bucket") + self.assertEqual( + len([c for c in self.spark.catalog.listColumns("pyspark_bucket") + if c.name in ("x", "y") and c.isBucket]), --- End diff -- Copying docs from Scala docs directly could be confusing since we won't support this in 2.0 and 2.1 and changes since 2.0 doesn't really affect us here.
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