AvroTypeException with "Expected" case : field name is not provided

[Yanna elina <ya...@gmail.com>]

Hi guys ,

in 1.9 when there is exception like this  *"org.apache.avro.AvroTypeException:
Expected start-union. Got END_OBJECT"* .
and* Using genericRecord = reader.read(null, decoder);*

its could be nice to provide the field in error. it could be  more easy to
debug the schema.

thx !

Re: AvroTypeException with "Expected" case : field name is not provided

[fa...@legsem.com]

On 13.09.2019 11:46, Yanna elina wrote:

> Hi guys ,
> 
> in 1.9 when there is exception like this  "org.apache.avro.AvroTypeException: Expected start-union. Got END_OBJECT" .   
> and Using genericRecord = reader.read(null, decoder);
> 
> its could be nice to provide the field in error. it could be  more easy to debug the schema.
> 
> thx !

That would great yes. The field name may not be sufficient though, the
location relative to the schema root would be better I think. 

Internally we have defined a simple spec we call avroloc that looks like
recorda.field1.field2.1.recordb.field3 where the numeric step .1 is the
zero-based alternative in case you traverse a union. To signal a
particular item in an array, field2[3] is used in the avroloc. 

While we are on the topic of read error reporting, record number and
offset within the record where the offending data is would also help. 

Fady