Spark Structured *Stateful* Streaming is not working

[#1]

I noticed that Spark Structured *Stateful* Streaming is not working in CDH 6.3.0. The states are not getting timed out as expected when I use:

mapGroupsWithState

This feature is available in Spark 2.4.1.

Which version of CDH would this work in? In other words which version of CDH contains Spark 2.4.1?

[#2]

So no one in the Community has used this feature? Can someone from Cloudera answer this please? Thanks in advance.