OK, I know where I was wrong
Best, -- Nan Zhu Sent with Sparrow (http://www.sparrowmailapp.com/?sig) On Sunday, February 23, 2014 at 12:50 PM, Nan Zhu wrote: > String, it should be get the following helper function > > private[spark] def getKeyClass() = implicitly[ClassTag[K]].runtimeClass > > private[spark] def getValueClass() = implicitly[ClassTag[V]].runtimeClass > > and this is what I run > > scala> val a = sc.textFile("/Users/nanzhu/code/incubator-spark/LICENSE", > 2).map(line => ("a", "b")) > > scala> a.saveAsNewAPIHadoopFile("/Users/nanzhu/code/output_rdd") > java.lang.InstantiationException > at > sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48) > at java.lang.reflect.Constructor.newInstance(Constructor.java:526) > at java.lang.Class.newInstance(Class.java:374) > at > org.apache.spark.rdd.PairRDDFunctions.saveAsNewAPIHadoopFile(PairRDDFunctions.scala:632) > at > org.apache.spark.rdd.PairRDDFunctions.saveAsNewAPIHadoopFile(PairRDDFunctions.scala:590) > at $iwC$$iwC$$iwC$$iwC.<init>(<console>:15) > at $iwC$$iwC$$iwC.<init>(<console>:20) > at $iwC$$iwC.<init>(<console>:22) > at $iwC.<init>(<console>:24) > at <init>(<console>:26) > at .<init>(<console>:30) > at .<clinit>(<console>) > at .<init>(<console>:7) > at .<clinit>(<console>) > at $print(<console>) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:606) > at org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:774) > at org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1042) > at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:611) > at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:642) > at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:606) > at org.apache.spark.repl.SparkILoop.reallyInterpret$1(SparkILoop.scala:790) > at > org.apache.spark.repl.SparkILoop.interpretStartingWith(SparkILoop.scala:835) > at org.apache.spark.repl.SparkILoop.command(SparkILoop.scala:747) > at org.apache.spark.repl.SparkILoop.processLine$1(SparkILoop.scala:595) > at org.apache.spark.repl.SparkILoop.innerLoop$1(SparkILoop.scala:602) > at org.apache.spark.repl.SparkILoop.loop(SparkILoop.scala:605) > at > org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply$mcZ$sp(SparkILoop.scala:928) > at > org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:878) > at > org.apache.spark.repl.SparkILoop$$anonfun$process$1.apply(SparkILoop.scala:878) > at > scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135) > at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:878) > at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:970) > at org.apache.spark.repl.Main$.main(Main.scala:31) > at org.apache.spark.repl.Main.main(Main.scala) > > > > > > > -- > Nan Zhu > > > On Sunday, February 23, 2014 at 11:06 AM, Nick Pentreath wrote: > > > Hi > > > > What KeyClass and ValueClass are you trying to save as the keys/values of > > your dataset? > > > > > > > > On Sun, Feb 23, 2014 at 10:48 AM, Nan Zhu <zhunanmcg...@gmail.com > > (mailto:zhunanmcg...@gmail.com)> wrote: > > > > > Hi, all > > > > > > I found the weird thing on saveAsNewAPIHadoopFile in > > > PairRDDFunctions.scala when working on the other issue, > > > > > > saveAsNewAPIHadoopFile throws java.lang.InstantiationException all the > > > time > > > > > > I checked the commit history of the file, it seems that the API exists for > > > a long time, no one else found this? (that's the reason I'm confusing) > > > > > > Best, > > > > > > -- > > > Nan Zhu > > > > > > > > > > > > >
