如何从火花中的另一个数据框值重命名数据框列和数据类型？

嗨，我有两个这样的数据框：

import spark.implicits._
import org.apache.spark.sql._

val transformationDF = Seq(
  ("A_IN", "ain","String"),
  ("ADDR_HASH","addressHash","String")
).toDF("db3Column", "hudiColumn","hudiDatatype")

val addressDF=Seq(
("123","uyt"),
("124","qwe")
).toDF("A_IN", "ADDR_HASH")

现在我想重命名列并更改transformationdf中提到的值的数据类型。transformationDF中的hudicolumn名称和hudidatatype将成为addressDF的列名称和数据类型。我试过这样的代码来改变但不起作用：

var db3ColumnName:String =_
var hudiColumnName:String =_
var hudiDatatypeName:String = _

for (row <- transformationDF.rdd.collect)
{   
     db3ColumnName = row.mkString(",").split(",")(0)
      hudiColumnName= row.mkString(",").split(",")(1)
    hudiDatatypeName = row.mkString(",").split(",")(2)
    

addressDF.withColumnRenamed(db3ColumnName,hudiColumnName).withColumn(hudiColumnName,col(hudiColumnName).cast(hudiDatatypeName))
} 

现在，当我打印 addressDF 时，更改不会反映出来。

谁能帮我这个 。