Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/16499#discussion_r101883328
--- Diff: core/src/main/scala/org/apache/spark/storage/BlockManager.scala
---
@@ -813,7 +813,14 @@ private[spark] class BlockManager(
false
}
} else {
- memoryStore.putBytes(blockId, size, level.memoryMode, () =>
bytes)
+ val memoryMode = level.memoryMode
+ memoryStore.putBytes(blockId, size, memoryMode, () => {
+ if (memoryMode == MemoryMode.OFF_HEAP) {
--- End diff --
I mean if all `bytes` are copy before passing in, it is no need to do
another copy.
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