abellina commented on code in PR #43627:
URL: https://github.com/apache/spark/pull/43627#discussion_r1394870890
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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:
Thanks @tgravescs. Handled both comments here:
https://github.com/apache/spark/pull/43627/commits/6d002a361ac2c1dfad48ee530766c9b0a605696f
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