Github user viper-kun commented on a diff in the pull request: https://github.com/apache/spark/pull/5178#discussion_r27193887 --- Diff: core/src/main/scala/org/apache/spark/storage/ShuffleBlockFetcherIterator.scala --- @@ -181,68 +181,100 @@ final class ShuffleBlockFetcherIterator( // at most maxBytesInFlight in order to limit the amount of data in flight. val remoteRequests = new ArrayBuffer[FetchRequest] + val shuffleMgrName = SparkEnv.get.conf.get("spark.shuffle.manager", "sort") + // Tracks total number of blocks (including zero sized blocks) var totalBlocks = 0 - for ((address, blockInfos) <- blocksByAddress) { - totalBlocks += blockInfos.size - if (address.executorId == blockManager.blockManagerId.executorId) { - // Filter out zero-sized blocks - localBlocks ++= blockInfos.filter(_._2 != 0).map(_._1) - numBlocksToFetch += localBlocks.size - } else { - val iterator = blockInfos.iterator - var curRequestSize = 0L - var curBlocks = new ArrayBuffer[(BlockId, Long)] - while (iterator.hasNext) { - val (blockId, size) = iterator.next() - // Skip empty blocks - if (size > 0) { - curBlocks += ((blockId, size)) - remoteBlocks += blockId - numBlocksToFetch += 1 - curRequestSize += size - } else if (size < 0) { - throw new BlockException(blockId, "Negative block size " + size) - } - if (curRequestSize >= targetRequestSize) { - // Add this FetchRequest - remoteRequests += new FetchRequest(address, curBlocks) - curBlocks = new ArrayBuffer[(BlockId, Long)] - logDebug(s"Creating fetch request of $curRequestSize at $address") - curRequestSize = 0 - } + if(shuffleMgrName == "hash") { --- End diff -- what are you meansï¼how to specify the full pathï¼
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