Incompatible changes in o.a.p.thrift.projection

[asfimport]

There are incompatible changes in o.a.p.thrift.projection that weren't caught because of PARQUET-330:

• The return type of FieldsPath#push(ThriftField) changed (return type compatibility ref)
• FieldProjectionFilter changed to an interface

Both of these are incompatibilities if FieldProjectionFilter is part of the public API, which it appears to be because it is used by the ScroogeReadSupport and the ThriftSchemaConverter (public constructor).

Reporter: Ryan Blue / @rdblue

Related issues:

• Release Parquet 1.8.0 (blocks)

_{Note: This issue was originally created as PARQUET-332. Please see the migration documentation for further details.}

[asfimport]

Ryan Blue / @rdblue:
Resolved from discussion on the mailing list. These changes are to a non-public API.