Github user dongjoon-hyun commented on the pull request:
https://github.com/apache/spark/pull/13087#issuecomment-218948335
The reported error scenario is the following.
```scala
scala> val df = sc.parallelize(Seq(("a", "b"), ("a1",
"b1"))).toDF("old","old1")
scala> val udfFunc = udf((s: String) => {println(s"running udf($s)"); s })
scala> val newDF = df.withColumn("new", udfFunc(df("old")))
scala> val filteredOnNewColumnDF = newDF.filter("new <> 'a1'")
scala> filteredOnNewColumnDF.show
running udf(a)
running udf(a)
running udf(a1)
+---+----+---+
|old|old1|new|
+---+----+---+
| a| b| a|
+---+----+---+
```
The result of this PR is like the following.
```scala
scala> filteredOnNewColumnDF.show
running udf(a1)
running udf(a)
+---+----+---+
|old|old1|new|
+---+----+---+
| a| b| a|
+---+----+---+
```
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