Github user eatoncys commented on a diff in the pull request:
https://github.com/apache/spark/pull/23262#discussion_r240114106
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/ExistingRDD.scala ---
@@ -53,7 +53,7 @@ object RDDConversions {
data.mapPartitions { iterator =>
val numColumns = outputTypes.length
val mutableRow = new GenericInternalRow(numColumns)
- val converters =
outputTypes.map(CatalystTypeConverters.createToCatalystConverter)
+ val converters =
outputTypes.map(CatalystTypeConverters.createToCatalystConverter).toArray
--- End diff --
It has been modified, and the performance is the same as converting to
arrays.
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