cloud-fan commented on a change in pull request #28895: URL: https://github.com/apache/spark/pull/28895#discussion_r443954587
########## File path: core/src/main/scala/org/apache/spark/shuffle/ShuffleManager.scala ########## @@ -43,26 +44,16 @@ private[spark] trait ShuffleManager { context: TaskContext, metrics: ShuffleWriteMetricsReporter): ShuffleWriter[K, V] - /** - * Get a reader for a range of reduce partitions (startPartition to endPartition-1, inclusive). - * Called on executors by reduce tasks. - */ - def getReader[K, C]( - handle: ShuffleHandle, - startPartition: Int, - endPartition: Int, - context: TaskContext, - metrics: ShuffleReadMetricsReporter): ShuffleReader[K, C] - /** * Get a reader for a range of reduce partitions (startPartition to endPartition-1, inclusive) to - * read from map output (startMapIndex to endMapIndex - 1, inclusive). + * read from a range of map outputs which specified by mapIndexRange(startMapIndex to + * endMapIndex-1, inclusive). + * * Called on executors by reduce tasks. */ - def getReaderForRange[K, C]( + def getReader[K, C]( handle: ShuffleHandle, - startMapIndex: Int, - endMapIndex: Int, + mapIndexRange: Array[MapStatus] => (Int, Int), Review comment: We can document it, it's an internal API anyway. For logging, we do know the number of total mappers inside the method, right? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org