Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17568#discussion_r111561852
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/objects.scala
---
@@ -96,3 +99,32 @@ object CombineTypedFilters extends Rule[LogicalPlan] {
}
}
}
+
+/**
+ * Removes MapObjects when the following conditions are satisfied
+ * 1. Mapobject(e) where e is lambdavariable(), which means types for
input output
+ * are primitive types
+ * 2. no custom collection class specified
+ * representation of data item. For example back to back map operations.
+ */
+object EliminateMapObjects extends Rule[LogicalPlan] {
+ private def convertDataTypeToArrayClass(dt: DataType): Class[_] = dt
match {
+ case IntegerType => classOf[Array[Int]]
+ case LongType => classOf[Array[Long]]
+ case DoubleType => classOf[Array[Double]]
+ case FloatType => classOf[Array[Float]]
+ case ShortType => classOf[Array[Short]]
+ case ByteType => classOf[Array[Byte]]
+ case BooleanType => classOf[Array[Boolean]]
+ }
+
+ def apply(plan: LogicalPlan): LogicalPlan = plan transform {
+ case _ @ DeserializeToObject(_ @ Invoke(
--- End diff --
```
case MapObjects(_, _, _, _: LambdaVariable, inputData, None, _) => inputData
```
can this work?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
