dongjoon-hyun commented on a change in pull request #24260: [SPARK-27329][SQL]
Pruning nested field in map of map key and value from object serializers
URL: https://github.com/apache/spark/pull/24260#discussion_r270695587
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/DatasetOptimizationSuite.scala
##########
@@ -142,4 +142,25 @@ class DatasetOptimizationSuite extends QueryTest with
SharedSQLContext {
checkAnswer(df1, Seq(Row("1"), Row("2"), Row("3")))
}
}
+
+ test("Pruned nested serializers: map of map value") {
+ withSQLConf(SQLConf.SERIALIZER_NESTED_SCHEMA_PRUNING_ENABLED.key ->
"true") {
+ val mapData = Seq((Map(("k", Map(("k2", ("a_1", 11))))), 1),
+ (Map(("k", Map(("k2", ("b_1", 22))))), 2), (Map(("k", Map(("k2",
("c_1", 33))))), 3))
Review comment:
nit.
```scala
val mapData = Seq(
(Map(("k", Map(("k2", ("a_1", 11))))), 1),
(Map(("k", Map(("k2", ("b_1", 22))))), 2),
(Map(("k", Map(("k2", ("c_1", 33))))), 3))
```
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