How to save files in same directory using saveAsNewAPIHadoopFile spark scala

I am using spark streaming and I want to save each batch of spark streaming on my local in Avro format. I have used saveAsNewAPIHadoopFile to save data in Avro format. This works well. But it overwrites the existing file. Next batch data will overwrite the old data. Is there any way to save Avro file in common directory? I tried by adding some properties of Hadoop job conf for adding a prefix in the file name. But not working any properties.

dstream.foreachRDD {
  rdd.saveAsNewAPIHadoopFile(
      path,
      classOf[AvroKey[T]],
      classOf[NullWritable],
      classOf[AvroKeyOutputFormat[T]],
      job.getConfiguration()
    )
}