Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19285#discussion_r163750079
--- Diff:
core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala ---
@@ -702,6 +641,87 @@ private[spark] class MemoryStore(
}
}
+private trait ValuesBuilder[T] {
+ def preciseSize: Long
+ def build(): MemoryEntry[T]
+}
+
+private trait ValuesHolder[T] {
+ def storeValue(value: T): Unit
+ def estimatedSize(): Long
+ def getBuilder(): ValuesBuilder[T]
--- End diff --
add a comment to say that, after `getBuilder` is called, this
`ValuesHolder` becomes invalid.
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