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[SPARK-17301][SQL] Remove unused classTag field from AtomicType base class #14869

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[SPARK-17301][SQL] Remove unused classTag field from AtomicType base class #14869

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10 changes: 1 addition & 9 deletions sql/catalyst/src/main/scala/org/apache/spark/sql/types/AbstractDataType.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -17,13 +17,10 @@

package org.apache.spark.sql.types

import scala.reflect.ClassTag
import scala.reflect.runtime.universe.{runtimeMirror, TypeTag}
import scala.reflect.runtime.universe.TypeTag

import org.apache.spark.annotation.DeveloperApi
import org.apache.spark.sql.catalyst.ScalaReflectionLock
import org.apache.spark.sql.catalyst.expressions.Expression
import org.apache.spark.util.Utils

/**
* A non-concrete data type, reserved for internal uses.
Expand Down Expand Up @@ -130,11 +127,6 @@ protected[sql] abstract class AtomicType extends DataType {
private[sql] type InternalType
private[sql] val tag: TypeTag[InternalType]
private[sql] val ordering: Ordering[InternalType]

@transient private[sql] val classTag = ScalaReflectionLock.synchronized {
val mirror = runtimeMirror(Utils.getSparkClassLoader)
ClassTag[InternalType](mirror.runtimeClass(tag.tpe))
}
}


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