Avro未填充数组类型的方括号

{
"name": "schema_name",
"type": "record",
"fields" : [
{
"name": "schema",
"type": "string"
},
{
  "name": "data",
  "type": {
    "type": "array",
    "items":
      {
        "name": "data",
        "type": "record",
        "fields": [
          {
            "name": "phone_number",
            "type": "string"
          }
        ]
      }
  }
},
{
  "name":"flag",
  "type":"string"
}
]
}

我用它从文本文件生成Avro消息:

def main(args: Array[String]): Unit = {
  val avroSchemaStr = Source.fromFile("avro_schema.txt").mkString
  val avroSchema = new Schema.Parser().parse(avroSchemaStr)

  Source.fromFile("phone_numbers.txt").getLines.foreach { msg =>
    println(fixedWidthToAvro(msg, avroSchema))
  }
}

def fixedWidthToAvro(record: String, avroSchema: Schema): GenericRecord = {
  val childSchema = new GenericData.Record(avroSchema).getSchema.getField("data").schema.getElementType
  val parentRrecord = new GenericData.Record(avroSchema)
  val childRecord = new GenericData.Record(childSchema)

  childRecord.put("phone_number", "1234567890")
  parentRrecord.put("schema", "schema_name")
  parentRrecord.put("data", childRecord)
  parentRrecord.put("flag", "I")

  println(parentRrecord)
  parentRrecord
}

一切正常,对于给定的消息,我得到以下输出:

{"schema": "schema_name", "data": {"phone_number": "1234567890"}, "flag": "I"}

然而,正如我宣布的 data 字段类型为 array

{"schema": "schema_name", "data": [{"phone_number": "1234567890"}], "flag": "I"}

我想要那个 数据