Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/17295#discussion_r107322905 --- Diff: core/src/main/scala/org/apache/spark/broadcast/TorrentBroadcast.scala --- @@ -219,18 +219,22 @@ private[spark] class TorrentBroadcast[T: ClassTag](obj: T, id: Long) case None => logInfo("Started reading broadcast variable " + id) val startTimeMs = System.currentTimeMillis() - val blocks = readBlocks().flatMap(_.getChunks()) + val blocks = readBlocks() logInfo("Reading broadcast variable " + id + " took" + Utils.getUsedTimeMs(startTimeMs)) - val obj = TorrentBroadcast.unBlockifyObject[T]( - blocks, SparkEnv.get.serializer, compressionCodec) - // Store the merged copy in BlockManager so other tasks on this executor don't - // need to re-fetch it. - val storageLevel = StorageLevel.MEMORY_AND_DISK - if (!blockManager.putSingle(broadcastId, obj, storageLevel, tellMaster = false)) { - throw new SparkException(s"Failed to store $broadcastId in BlockManager") + try { + val obj = TorrentBroadcast.unBlockifyObject[T]( + blocks.map(_.toInputStream()), SparkEnv.get.serializer, compressionCodec) + // Store the merged copy in BlockManager so other tasks on this executor don't + // need to re-fetch it. + val storageLevel = StorageLevel.MEMORY_AND_DISK + if (!blockManager.putSingle(broadcastId, obj, storageLevel, tellMaster = false)) { + throw new SparkException(s"Failed to store $broadcastId in BlockManager") + } + obj + } finally { + blocks.foreach(_.dispose()) --- End diff -- ah good catch! we should dispose the blocks here
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