Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/6990#discussion_r33255398
--- 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 --
I think the comment about `StorageLevel` is no longer relevant, right?
Also I prefer the extended comment explained *why* this is necessary, eg.
something along the lines of:
Replicating requires enough memory for the whole serialized block. But if
we failed to put the block locally, that means we didn't have enough memory, so
we shouldn't try to replicate.
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