How to deserialize a hadoop result sequence file outside hadoop (or a spark saveAsObjectFile outside spark)

deserialize_hadoop_sequence_file.scala

// libraryDependencies += "org.apache.hadoop" % "hadoop-common" % "2.7.3"

import java.io.{ByteArrayInputStream, ObjectInputStream}

import org.apache.hadoop.conf._
import org.apache.hadoop.fs._
import org.apache.hadoop.io._

val f = "/path/to/part-00000"
val reader = new SequenceFile.Reader(new Configuration(), SequenceFile.Reader.file(new Path(f)))
try {
  val key = NullWritable.get
  val value = new BytesWritable
  while (reader.next(key, value)) {
    val values = new ObjectInputStream(new ByteArrayInputStream(value.getBytes)).readObject().asInstanceOf[Array[_]] // or specify the type if you know it
    values.foreach(println)
  }
} finally reader.close()