Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/16499#discussion_r102378915
--- 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 --
But I am still wondering if we need to do copy like this here. Right, it is
defensive, but as `BlockManager` is private to spark internal, and if all
callers to it do not modify/release the byte buffer passed in, doesn't this
defensive copy only cause performance regression?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
