mridulm commented on code in PR #45052:
URL: https://github.com/apache/spark/pull/45052#discussion_r1501700461
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core/src/main/scala/org/apache/spark/storage/BlockManager.scala:
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@@ -177,15 +177,17 @@ private[spark] class HostLocalDirManager(
* Manager running on every node (driver and executors) which provides
interfaces for putting and
* retrieving blocks both locally and remotely into various stores (memory,
disk, and off-heap).
*
- * Note that [[initialize()]] must be called before the BlockManager is usable.
+ * Note that [[initialize()]] must be called before the BlockManager is
usable. Also, the
+ * `memoryManager` is initialized at a later stage after DriverPlugin is
loaded, to allow the
+ * plugin to overwrite memory configurations.
*/
private[spark] class BlockManager(
val executorId: String,
rpcEnv: RpcEnv,
val master: BlockManagerMaster,
val serializerManager: SerializerManager,
val conf: SparkConf,
- memoryManager: MemoryManager,
+ var memoryManager: MemoryManager,
Review Comment:
@sunchao , I was looking at this again.
The stack trace of the NPE that we saw earlier was part of spark context
initialization ... not an access from task, right ?
Given this, I am not sure if the hypothesis is valid ... am I missing
something here ?
(Btw, the line offset is off by 1 - so not sure if anything else changed as
well)
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