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[SPARK-10986][Mesos] Set the context class loader in the Mesos executor backend. #9282

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[SPARK-10986][Mesos] Set the context class loader in the Mesos executor backend. #9282

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5 changes: 5 additions & 0 deletions core/src/main/scala/org/apache/spark/executor/MesosExecutorBackend.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,11 @@ private[spark] class MesosExecutorBackend

logInfo(s"Registered with Mesos as executor ID $executorId with $cpusPerTask cpus")
this.driver = driver
// Set a context class loader to be picked up by the serializer. Without this call
// the serializer would default to the null class loader, and fail to find Spark classes
// See SPARK-10986.
Thread.currentThread().setContextClassLoader(this.getClass.getClassLoader)

val properties = Utils.deserialize[Array[(String, String)]](executorInfo.getData.toByteArray) ++
Seq[(String, String)](("spark.app.id", frameworkInfo.getId.getValue))
val conf = new SparkConf(loadDefaults = true).setAll(properties)
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