Good day,
I have a case-class defined like this:
case class MyClass(ts: Long, s1: String, s2: String, i1: Integer, i2:
Integer)
object MyClass {
val EMPTY = MyClass(0L, null, null, 0, 0)
def apply(): MyClass = EMPTY
}
My code has been running fine (I was not aware of the limitation mentioned
in
https://ci.apache.org/projects/flink/flink-docs-stable/dev/types_serialization.html)
But when I tried to create the instance /MyClass(0L, null, null, *null*,
0)/, I got the following error: /org.apache.flink.types.NullFieldException:
Field 3 is null, but expected to hold a value./
I am confused. Why there's the difference between a null String and a null
Integer?
Thanks and regards,
Averell
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