> For union types (e.g bar in your schema) the first type is the default value.
> In case of a missing value (new User(null)) the reader expects to read a
> variable of default value type. Which in your example is a String.
I don't think that was a the problem. As far as I can see, if I vary the order
of the "null" and "string", the binary output does not change (aside from the
schema header).
This looks to be a problem between the "expected" versus the "actual" schema.
The actual schema is read correctly but unfortunately the "expected" schema is
what is calculated from my User class without the "null" field. The schema
from file is ignored? Grumble.
So I guess I need to do something like:
ReflectDataumReder<User> datumReader = new ReflectDatumReader<>(User.class);
datumReader.setExpected(schema);
DataFileReader<Schema> reader = ...
Is that right? That just seems crazy. What am I doing wrong?
Thanks,
gray
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