Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/789#discussion_r18051738
--- Diff:
core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala ---
@@ -81,21 +80,20 @@ class KryoSerializer(conf: SparkConf)
kryo.register(classOf[HttpBroadcast[_]], new KryoJavaSerializer())
// Allow the user to register their own classes by setting
spark.kryo.registrator
- for (regCls <- registrator) {
- logDebug("Running user registrator: " + regCls)
- try {
- val reg = Class.forName(regCls, true, classLoader).newInstance()
- .asInstanceOf[KryoRegistrator]
-
- // Use the default classloader when calling the user registrator.
- Thread.currentThread.setContextClassLoader(classLoader)
- reg.registerClasses(kryo)
- } catch {
- case e: Exception =>
- throw new SparkException(s"Failed to invoke $regCls", e)
- } finally {
- Thread.currentThread.setContextClassLoader(oldClassLoader)
- }
+ try {
+ val reg = conf.getOption("spark.kryo.registrator").map(
+ Class.forName(_, true,
classLoader).newInstance().asInstanceOf[KryoRegistrator]).getOrElse(
+ new DefaultKryoRegistrator(conf))
--- End diff --
Can you use this style
```
val reg = conf.getOption(...)
.map(...)
.getOrElse(...)
```
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