tgravescs commented on code in PR #43627:
URL: https://github.com/apache/spark/pull/43627#discussion_r1394837773
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core/src/main/scala/org/apache/spark/SparkEnv.scala:
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@@ -415,6 +418,11 @@ object SparkEnv extends Logging {
advertiseAddress, blockManagerPort, numUsableCores,
blockManagerMaster.driverEndpoint)
// NB: blockManager is not valid until initialize() is called later.
+ // SPARK-45762 introduces a change where the ShuffleManager is
initialized later
+ // in the SparkContext and Executor, to allow for custom
ShuffleManagers defined
+ // in user jars. In the executor, the BlockManager uses a lazy val to
obtain the
+ // shuffleManager from the SparkEnv. In the driver, the SparkEnv's
shuffleManager
Review Comment:
I think this comment it no longer true. Driver SparkEnv shufflemanager is
created after the plugin initialized.
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core/src/main/scala/org/apache/spark/SparkEnv.scala:
##########
@@ -71,6 +70,12 @@ class SparkEnv (
val outputCommitCoordinator: OutputCommitCoordinator,
val conf: SparkConf) extends Logging {
+ // We initialize the ShuffleManager later in SparkContext, and Executor, to
allow
Review Comment:
```suggestion
// We initialize the ShuffleManager later in SparkContext and Executor to
allow
```
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