Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/9000#discussion_r41561465
--- Diff:
core/src/main/scala/org/apache/spark/shuffle/ShuffleMemoryManager.scala ---
@@ -138,30 +150,27 @@ class ShuffleMemoryManager protected (
private[spark] object ShuffleMemoryManager {
- def create(conf: SparkConf, numCores: Int): ShuffleMemoryManager = {
- val maxMemory = ShuffleMemoryManager.getMaxMemory(conf)
+ def create(
+ conf: SparkConf,
+ memoryManager: MemoryManager,
+ numCores: Int): ShuffleMemoryManager = {
+ val maxMemory = memoryManager.maxExecutionMemory
val pageSize = ShuffleMemoryManager.getPageSize(conf, maxMemory,
numCores)
- new ShuffleMemoryManager(maxMemory, pageSize)
+ new ShuffleMemoryManager(memoryManager, pageSize)
}
+ /**
+ * Create a dummy [[ShuffleMemoryManager]] with the specified capacity
and page size.
+ */
def create(maxMemory: Long, pageSizeBytes: Long): ShuffleMemoryManager =
{
- new ShuffleMemoryManager(maxMemory, pageSizeBytes)
+ val conf = new SparkConf
+ val memoryManager = new StaticMemoryManager(conf, maxMemory,
Long.MaxValue)
--- End diff --
This is a totally minor nit to be picking, but do you mind explicitly
naming these parameters at their call sites? e.g.
```
new StaticMemoryManager(conf, maxExecutionMemory = maxMemory,
maxStorageMemory = Long.MaxValue)
```
I think this makes the code slightly easier to read.
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