Schema-less or dynamic schema use

[Jim]

Hello all,
I couldn't find a user list so my apologies if this falls in the wrong 
place. I'm looking for a little guidance. I'm a newbie with respect to 
Parquet.

We have a use case where we don't want concrete POJOs to represent data 
in our store. It's dynamic in that each data set is unique and dynamic 
and we need to handle incoming datasets at runtime.

Examples of how to write to Parquet are sparse and all of the ones I 
could find assume Thrift/Avro/Protobuf IDL and generated schema and 
POJOs. I don't want to dynamically generate an IDL, shell out to a 
compiler, and classload the results in order to use Parquet. Is there an 
example that does what I'm looking for?

Thanks
Jim