Github user gatorsmile commented on the pull request:
https://github.com/apache/spark/pull/10239#issuecomment-163496616
Regarding the JIRA SPARK-12131, how about the following statement?
```scala
implicit val kryoEncoder = Encoders.kryo[KryoClassData]
val ds = Seq((KryoClassData("a", 1), KryoClassData("b", 2)).toDS()
```
This does not work. @liancheng just closed this PR, which sounds a similar
issue for tuple, right? Will this PR resolves this issue? @cloud-fan
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