github.com/fraugster/parquet-go@v0.12.0/parquetschema/schema-files/test2.schema (about)

     1  message foo {
     2    required binary the_id (STRING) = 1;
     3    required binary client (STRING) = 2;
     4    required binary request_body = 3;
     5    required int64 ts = 4;
     6    required group data_enriched (MAP) {
     7      repeated group key_value (MAP_KEY_VALUE) {
     8        required binary key = 5;
     9        required binary value = 6;
    10      }
    11    }
    12    optional boolean is_fraud = 7;
    13  }