Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/2792#discussion_r18998452
--- Diff:
core/src/main/scala/org/apache/spark/storage/BlockManagerMasterActor.scala ---
@@ -457,16 +457,18 @@ private[spark] class BlockManagerInfo(
if (_blocks.containsKey(blockId)) {
// The block exists on the slave already.
- val originalLevel: StorageLevel = _blocks.get(blockId).storageLevel
+ val blockStatus: BlockStatus = _blocks.get(blockId)
+ val originalLevel: StorageLevel = blockStatus.storageLevel
+ val originalMemSize: Long = blockStatus.memSize
if (originalLevel.useMemory) {
- _remainingMem += memSize
+ _remainingMem += originalMemSize
--- End diff --
I see, we want to release the `originalMemSize` and occupy the new
`memSize`. That makes sense. It seems that the old code is just wrong then.
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