Jon Hsieh pointed out that ReflectDatumWriter always returned a DatumWriter<Object>, though it's often clear (by the way the schema is constructed) that there's a more specific type that could be used. In the quote below, the second line would be preferable to the third.
|Status||Open [ 1 ]||Resolved [ 5 ]|
|Fix Version/s||1.3.0 [ 12314318 ]|
|Resolution||Fixed [ 1 ]|
|Status||Resolved [ 5 ]||Closed [ 6 ]|