Github user tdas commented on a diff in the pull request: https://github.com/apache/spark/pull/3803#discussion_r24064149 --- Diff: core/src/main/scala/org/apache/spark/SparkContext.scala --- @@ -671,7 +674,11 @@ class SparkContext(config: SparkConf) extends Logging with ExecutorAllocationCli classOf[LongWritable], classOf[BytesWritable], conf=conf) - val data = br.map{ case (k, v) => v.getBytes} + val data = br.map { case (k, v) => + val bytes = v.getBytes + assert(bytes.length == recordLength, "Byte array does not have correct length") + bytes --- End diff -- I meant should the user be told that the system can throw error when the records are not of the expected size. I dont have any strong feeling on this, just wondering.
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