Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18416#discussion_r125903295
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
---
@@ -325,8 +328,10 @@ object ScalaReflection extends ScalaReflection {
}
val companion =
t.normalize.typeSymbol.companionSymbol.typeSignature
- val cls = companion.declaration(newTermName("newBuilder")) match {
- case NoSymbol => classOf[Seq[_]]
+ val cls = companion.member(newTermName("newBuilder")) match {
--- End diff --
It works.
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use
setLogLevel(newLevel).
Welcome to
____ __
/ __/__ ___ _____/ /__
_\ \/ _ \/ _ `/ __/ '_/
/___/ .__/\_,_/_/ /_/\_\ version 2.3.0-SNAPSHOT
/_/
Using Scala version 2.10.6 (Java HotSpot(TM) 64-Bit Server VM, Java
1.8.0_102)
Type in expressions to have them evaluated.
Type :help for more information.
...
scala> val t =
ScalaReflection.localTypeOf[scala.collection.mutable.HashSet[Int]]
t: org.apache.spark.sql.catalyst.ScalaReflection.universe.Type =
scala.collection.mutable.HashSet[Int]
scala> val companion =
t.normalize.typeSymbol.companionSymbol.typeSignature
companion: org.apache.spark.sql.catalyst.ScalaReflection.universe.Type
= scala.collection.mutable.HashSet.type
scala> val cls = companion.member(newTermName("newBuilder"))
cls: org.apache.spark.sql.catalyst.ScalaReflection.universe.Symbol =
method newBuilder
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