Github user mgummelt commented on a diff in the pull request: https://github.com/apache/spark/pull/14275#discussion_r71452287 --- Diff: core/src/main/scala/org/apache/spark/SparkConf.scala --- @@ -47,7 +47,7 @@ import org.apache.spark.util.Utils * * @param loadDefaults whether to also load values from Java system properties */ -class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging { +class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging with Serializable { --- End diff -- Added `Serializable` so that `SparkConf` can be persisted to ZK
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