Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18697#discussion_r130286222
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/JoinSuite.scala ---
@@ -36,6 +40,70 @@ class JoinSuite extends QueryTest with SharedSQLContext {
df.queryExecution.optimizedPlan.stats.sizeInBytes
}
+ test("SPARK-16683 Repeated joins to same table can leak attributes via
partitioning") {
+ val hier = sqlContext.sparkSession.sparkContext.parallelize(Seq(
+ ("A10", "A1"),
+ ("A11", "A1"),
+ ("A20", "A2"),
+ ("A21", "A2"),
+ ("B10", "B1"),
+ ("B11", "B1"),
+ ("B20", "B2"),
+ ("B21", "B2"),
+ ("A1", "A"),
+ ("A2", "A"),
+ ("B1", "B"),
+ ("B2", "B")
+ )).toDF("son", "parent").cache() // passes if cache is removed but
with count on dist1
+ hier.createOrReplaceTempView("hier")
+ hier.count() // if this is removed it passes
+
+ val base = sqlContext.sparkSession.sparkContext.parallelize(Seq(
+ Tuple1("A10"),
+ Tuple1("A11"),
+ Tuple1("A20"),
+ Tuple1("A21"),
+ Tuple1("B10"),
+ Tuple1("B11"),
+ Tuple1("B20"),
+ Tuple1("B21")
+ )).toDF("id")
+ base.createOrReplaceTempView("base")
+
+ val dist1 = spark.sql("""
+ SELECT parent level1
--- End diff --
Please fix the code indent.
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