test/org/apache/pig/builtin/avro/schema/recordsWithMapsOfArrayOfRecords.avsc

{
  "name" : "recordsWithMapsOfArrayOfRecords",
  "namespace" : "org.apache.pig.test.builtin",
  "type" : "record",
  "fields" : [
    {"name" : "key", "type" : "string"},
    {"name" : "value", "type" : "int"},
    {"name" : "parameters", "type" :
      {"type" : "map",
       "values" : {
         "type" : "array",
         "items" : {
            "name" : "innerRecord",
            "type" : "record",
            "fields" : [
              {"name" : "k", "type" : "string"},
              {"name" : "v", "type" : "int"}
            ]
          }
        }
      }  
    }    
  ]
}