Github user markhamstra commented on a diff in the pull request:
https://github.com/apache/spark/pull/21440#discussion_r191063339
--- Diff: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
---
@@ -659,6 +659,11 @@ private[spark] class BlockManager(
* Get block from remote block managers as serialized bytes.
*/
def getRemoteBytes(blockId: BlockId): Option[ChunkedByteBuffer] = {
+ // TODO if we change this method to return the ManagedBuffer, then
getRemoteValues
+ // could just use the inputStream on the temp file, rather than
memory-mapping the file.
+ // Until then, replication can go cause the process to use too much
memory and get killed
--- End diff --
grammar
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