Suggestions for transforming custom BigDecimal protobuf message to parquet's decimal type?

[Yun Liaw]

hi folks,

Now I am working on transforming a protobuf object which is a custom
message that wrapped the java's BigDecimal into the decimal type of parquet.

The custom message is something like this:

message BDecimal {
  required int32 scale = 1;
  required BInteger int_val = 2;}

message BInteger {
  required bytes value = 1;
}

ref: 
http://stackoverflow.com/questions/1051732/what-is-the-best-approach-for-serializing-bigdecimal-biginteger-to-protocolbuffe

I have tried to use parquet-proto to transform the protobuf object to
parquet, but it would transform the parquet with the same schema as above.
But what I want to do is whenever I encounter this BDecimal in protobuf, it
can be transformed to decimal type in parquet.

Any suggestions of doing this?

Best,
Yun