@garrettjonesgoogle @lesv @anthmgoogle: can someone review this? This bug breaks authentication via service accounts for dataflow io connectors. Please see b/65304954 for details

@vchudnov-g could you comment on why the readObject method was removed in your commit?

As per my comments, the method seemed to be unused.

If this change bringing readObject back fixes things, I'm fine with it.

I'm still curious, though, where/how does readObject get invoked?

It's a magic invocation - see https://docs.oracle.com/javase/7/docs/api/java/io/Serializable.html .

OK, thanks for the pointer.

The fix is fine by me. Maybe include a comment saying the method is needed for the Serializable interface?

I get that this is the Way Things Are Done, but these types of magic invocations seem really counterintuitive and lend themselves to issues like these.....

At any rate, my apologies for breaking things.