[PARQUET-2305] Allow Parquet to Proto conversion even though Target Schema has less fields

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.14.0
• Component/s: parquet-protobuf
• Assignee: Sanjay Sharma
• Reporter: Sanjay Sharma
• Created: 02/Jun/23 13:19
• Updated: 14/Jun/23 04:01
• Resolved: 14/Jun/23 04:01

Description

If Parquet has any field which has been removed from the schema and Parquet to Proto conversion happens, it errors out due to Unknown fields. There could be some scenarios that we want to still convert PARQUET into the target proto schema object which has lesser fields.

If specified "ignoreUnknownFields" as an argument, this should allow the conversion which ignore fields it can't convert and not error out.

Similar functionality exist in https://github.com/protocolbuffers/protobuf/blob/main/java/util/src/main/java/com/google/protobuf/util/JsonFormat.java with field "ignoringUnknownFields"