Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/5497#discussion_r28563390
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Exchange.scala ---
@@ -77,9 +79,30 @@ case class Exchange(
}
}
- override def execute(): RDD[Row] = attachTree(this , "execute") {
- lazy val sparkConf = child.sqlContext.sparkContext.getConf
+ @transient private lazy val sparkConf =
child.sqlContext.sparkContext.getConf
+
+ def serializer(
+ keySchema: Array[DataType],
+ valueSchema: Array[DataType],
+ numPartitions: Int): Serializer = {
+ val useSqlSerializer2 =
+ !(sortBasedShuffleOn && numPartitions > bypassMergeThreshold) &&
+ child.sqlContext.conf.useSqlSerializer2 &&
+ SparkSqlSerializer2.support(keySchema) &&
+ SparkSqlSerializer2.support(valueSchema)
+
+ val serializer = if (useSqlSerializer2) {
+ logInfo("Use SparkSqlSerializer2.")
--- End diff --
nit: Using
same below
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