vanzin commented on a change in pull request #26170: [SPARK-29397][core] Extend
plugin interface to include the driver.
URL: https://github.com/apache/spark/pull/26170#discussion_r338782581
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File path: core/src/main/scala/org/apache/spark/SparkContext.scala
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@@ -539,6 +541,9 @@ class SparkContext(config: SparkConf) extends Logging {
_heartbeatReceiver = env.rpcEnv.setupEndpoint(
HeartbeatReceiver.ENDPOINT_NAME, new HeartbeatReceiver(this))
+ // Initialize any plugins before the task scheduler is initialized.
+ _plugins = PluginContainer(this)
Review comment:
I can take another look, but I'm 99% sure that when I tried `registerSource`
after the metrics system had already been initialized, the metrics were not
being picked up by `ConsoleSink`.
Maybe it's a bug in that particular sink, but I didn't investigate that far.
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