I’ve got a question about comparing two enum values of the same schema but of different package path. They were both generated with avro. In my code, I can compare them like so:

val a = com.mycompany.path1.MyEnum.GOOD
val b = com.mycompany.path2.MyEnum.GOOD
if (a == b) {
    println("a == b")
}

This code actually compiles and runs. However, when I created 2 different enum classes by hand and put them into 2 paths, the code won’t compile and it will say something like:

Operator '==' cannot be applied to 'com.mycompany.path1.myEnum' and 'com.mycompany.path2.MyEnum'

Why?

do you see any JVM annotations on the avro-generated classes?

all I see is:

/**
 * Autogenerated by Avro
 * 
 * DO NOT EDIT DIRECTLY
 */
package com.mycompany.path1 (or path2)
public enum MyEnum {
    GOOD, BAD  ;
    ...
}

In your first example, is there a chance either of the properties' types is

Any

?

It's a known problem: https://youtrack.jetbrains.com/issue/KT-22043 By the way, @wei, does your code print "a == b" ever?

So the backstory of this is that this happened in our production code and the code compiled and ran. From our logging, we saw that indeed the condition test of

==

returned true for some cases (it’s a filter operation that we do based on the conditional). However, when I ran this locally in a test, it returned false (in other words, did not print

a == b

).

Did you not see @ilya.gorbunov's comment?