LuciferYang commented on a change in pull request #30351:
URL: https://github.com/apache/spark/pull/30351#discussion_r524871258
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala
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@@ -894,10 +893,6 @@ trait ScalaReflection extends Logging {
import universe._
- // The Predef.Map is scala.collection.immutable.Map.
- // Since the map values can be mutable, we explicitly import
scala.collection.Map at here.
- import scala.collection.Map
-
Review comment:
@srowen @HyukjinKwon
Actually there are 2 `import scala.collection.Map` in
`ScalaReflection.scala`, one is
https://github.com/apache/spark/blob/5af5aa146ecbff38b809127b5eb9805441627ed2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala#L50-L63
the other one is
https://github.com/apache/spark/blob/5af5aa146ecbff38b809127b5eb9805441627ed2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/ScalaReflection.scala#L888-L899
This pr removed the `import scala.collection.Map` in the `trait` not in the
`object`.
The use of `scala.collection.Map` all in `object` not in `trait` now,
because all the methods used `s.c.Map` have been moved from `trait
ScalaReflection` to other places now.
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