cloud-fan commented on a change in pull request #26946: [SPARK-30036][SQL] Fix:
REPARTITION hint does not work with order by
URL: https://github.com/apache/spark/pull/26946#discussion_r361103312
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/PlannerSuite.scala
##########
@@ -421,6 +421,52 @@ class PlannerSuite extends SharedSparkSession {
}
}
+ test("SPARK-30036: Romove unnecessary RoundRobinPartitioning " +
+ "if SortExec is followed by RoundRobinPartitioning") {
+ val distribution = OrderedDistribution(SortOrder(Literal(1), Ascending) ::
Nil)
+ val partitioning = RoundRobinPartitioning(5)
+ assert(!partitioning.satisfies(distribution))
+
+ val inputPlan = SortExec(SortOrder(Literal(1), Ascending) :: Nil,
+ global = true,
+ child = ShuffleExchangeExec(
+ partitioning,
+ DummySparkPlan(outputPartitioning = partitioning)))
+ val outputPlan =
EnsureRequirements(spark.sessionState.conf).apply(inputPlan)
+ assert(outputPlan.find {
+ case ShuffleExchangeExec(_: RoundRobinPartitioning, _, _) => true
+ case _ => false
+ }.isEmpty,
+ "RoundRobinPartitioning should be changed to RangePartitioning")
+
+ val query = testData.select('key, 'value).repartition(2).sort('key.asc)
+ assert(query.rdd.getNumPartitions == 2)
+ assert(query.rdd.collectPartitions()(0).map(_.get(0)).toSeq == (1 to 50))
+ }
+
+ test("SPARK-30036: Romove unnecessary HashPartitioning " +
+ "if SortExec is followed by HashPartitioning") {
+ val distribution = OrderedDistribution(SortOrder(Literal(1), Ascending) ::
Nil)
+ val partitioning = HashPartitioning(Literal(1) :: Nil, 5)
+ assert(!partitioning.satisfies(distribution))
+
+ val inputPlan = SortExec(SortOrder(Literal(1), Ascending) :: Nil,
+ global = true,
+ child = ShuffleExchangeExec(
+ partitioning,
+ DummySparkPlan(outputPartitioning = partitioning)))
+ val outputPlan =
EnsureRequirements(spark.sessionState.conf).apply(inputPlan)
+ assert(outputPlan.find {
+ case ShuffleExchangeExec(_: HashPartitioning, _, _) => true
+ case _ => false
+ }.isEmpty,
+ "HashPartitioning should be changed to RangePartitioning")
+
+ val query = testData.select('key, 'value).repartition(5,
'key).sort('key.asc)
Review comment:
makes sense
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
