Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/15915#discussion_r92169149
--- Diff:
core/src/main/scala/org/apache/spark/storage/memory/MemoryStore.scala ---
@@ -331,7 +331,12 @@ private[spark] class MemoryStore(
var unrollMemoryUsedByThisBlock = 0L
// Underlying buffer for unrolling the block
val redirectableStream = new RedirectableOutputStream
- val bbos = new
ChunkedByteBufferOutputStream(initialMemoryThreshold.toInt, allocator)
+ val chunkSize = if (initialMemoryThreshold > Int.MaxValue) {
+ 4 * 1024 * 1024
--- End diff --
Because `initialMemoryThreshold` is set to `unrollMemoryThreshold` which is
configurable, if we want to use a default value in this case, we should log a
warning message at least.
Another option is just throwing an exception. I am ok for either one.
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