Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/6990#discussion_r33307046
--- Diff: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
---
@@ -833,8 +833,10 @@ private[spark] class BlockManager(
logDebug("Put block %s locally took %s".format(blockId,
Utils.getUsedTimeMs(startTimeMs)))
// Either we're storing bytes and we asynchronously started
replication, or we're storing
- // values and need to serialize and replicate them now:
- if (putLevel.replication > 1) {
+ // values and need to serialize and replicate them now.
+ // Should not replicate the block if its StorageLevel is
StorageLevel.NONE or
+ // putting it to local is failed.
+ if (!putBlockInfo.isFailed && putLevel.replication > 1) {
--- End diff --
blocks aren't necessarily *serialized* to memory locally, they are just
stored (they might be serialized, or they might not). I think this version is
still missing the *why* component a little bit -- that if you don't have enough
memory to store locally, you don't even have enough memory to create the
message that requests the peer to replicate.
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