Github user mridulm commented on a diff in the pull request:
https://github.com/apache/spark/pull/22192#discussion_r215749556
--- Diff: core/src/main/scala/org/apache/spark/executor/Executor.scala ---
@@ -136,6 +136,32 @@ private[spark] class Executor(
// for fetching remote cached RDD blocks, so need to make sure it uses
the right classloader too.
env.serializerManager.setDefaultClassLoader(replClassLoader)
+ private val pluginList = conf.get(EXECUTOR_PLUGINS)
+ if (pluginList.nonEmpty) {
+ logDebug(s"Initializing the following plugins:
${pluginList.mkString(", ")}")
+ }
+
+ val executorPluginThread = new Thread {
+ var plugins: Seq[ExecutorPlugin] = Nil
+
+ override def run(): Unit = {
+ plugins = Utils.loadExtensions(classOf[ExecutorPlugin], pluginList,
conf)
+ plugins.foreach(_.init())
+ }
+
+ override def interrupt(): Unit = {
+ plugins.foreach(_.shutdown())
+ super.interrupt()
+ }
+ }
+
+ executorPluginThread.setContextClassLoader(replClassLoader)
+ executorPluginThread.start()
+
+ if (pluginList.nonEmpty) {
+ logDebug("Finished initializing plugins")
+ }
+
--- End diff --
We should wait for plugin's to finish initialization (join() on thread)
before moving on (particularly if we are emitting a message to indicate the
same).
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