有人能给我介绍一个在s3或任何文件系统中编写avro的好例子或示例吗？我正在使用一个自定义接收器，但我想通过sinkprovider的构造函数传递一些属性Map，我想可以进一步传递到接收器？
更新代码：

val query = df.mapPartitions { itr =>
  itr.map { row =>
    val rowInBytes = row.getAs[Array[Byte]]("value")
    MyUtils.deserializeAvro[GenericRecord](rowInBytes).toString
  }
}.writeStream
  .format("com.test.MyStreamingSinkProvider")
  .outputMode(OutputMode.Append())
  .queryName("testQ" )
  .trigger(ProcessingTime("10 seconds"))
  .option("checkpointLocation", "my_checkpoint_dir")
  .start()

query.awaitTermination()

接收器提供程序：

class MyStreamingSinkProvider extends StreamSinkProvider {

  override def createSink(sqlContext: SQLContext, parameters: Map[String, String], partitionColumns: Seq[String], outputMode: OutputMode): Sink = {
    new MyStreamingSink
  }
}

Flume：

class MyStreamingSink extends Sink with Serializable {

  final val log: Logger = LoggerFactory.getLogger(classOf[MyStreamingSink])

  override def addBatch(batchId: Long, data: DataFrame): Unit = {
    //For saving as text doc
    data.rdd.saveAsTextFile("path")

    log.warn(s"Total records processed: ${data.count()}")
    log.warn("Data saved.")
  }
}