hmm...out of ideas. can you check in spark ui environment tab that this jar is not somehow appears 2 times or more...? or more generally - any 2 jars that can contain this class by any chance
regarding your question about classloader - no idea, probably there is, I remember stackoverflow has some examples on how to print all classes, but how to print all classes of kryo classloader - no idea. On 8 September 2015 at 16:43, Nick Peterson <nrpeter...@gmail.com> wrote: > Yes, the jar contains the class: > > $ jar -tf lumiata-evaluation-assembly-1.0.jar | grep 2028/Document/Document > com/i2028/Document/Document$1.class > com/i2028/Document/Document.class > > What else can I do? Is there any way to get more information about the > classes available to the particular classloader kryo is using? > > On Tue, Sep 8, 2015 at 6:34 AM Igor Berman <igor.ber...@gmail.com> wrote: > >> java.lang.ClassNotFoundException: com.i2028.Document.Document >> >> 1. so have you checked that jar that you create(fat jar) contains this class? >> >> 2. might be there is some stale cache issue...not sure though >> >> >> On 8 September 2015 at 16:12, Nicholas R. Peterson <nrpeter...@gmail.com> >> wrote: >> >>> Here is the stack trace: (Sorry for the duplicate, Igor -- I forgot to >>> include the list.) >>> >>> >>> 15/09/08 05:56:43 WARN scheduler.TaskSetManager: Lost task 183.0 in stage >>> 41.0 (TID 193386, ds-compute2.lumiata.com): java.io.IOException: >>> com.esotericsoftware.kryo.KryoException: Error constructing instance of >>> class: com.lumiata.patientanalysis.utils.CachedGraph >>> at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1257) >>> at >>> org.apache.spark.broadcast.TorrentBroadcast.readBroadcastBlock(TorrentBroadcast.scala:165) >>> at >>> org.apache.spark.broadcast.TorrentBroadcast._value$lzycompute(TorrentBroadcast.scala:64) >>> at >>> org.apache.spark.broadcast.TorrentBroadcast._value(TorrentBroadcast.scala:64) >>> at >>> org.apache.spark.broadcast.TorrentBroadcast.getValue(TorrentBroadcast.scala:88) >>> at org.apache.spark.broadcast.Broadcast.value(Broadcast.scala:70) >>> at >>> com.lumiata.evaluation.analysis.prod.ProductionAnalyzer$$anonfun$apply$1.apply(ProductionAnalyzer.scala:44) >>> at >>> com.lumiata.evaluation.analysis.prod.ProductionAnalyzer$$anonfun$apply$1.apply(ProductionAnalyzer.scala:43) >>> at >>> org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$17.apply(RDD.scala:686) >>> at >>> org.apache.spark.rdd.RDD$$anonfun$mapPartitions$1$$anonfun$apply$17.apply(RDD.scala:686) >>> at >>> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35) >>> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:277) >>> at org.apache.spark.rdd.RDD.iterator(RDD.scala:244) >>> at >>> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35) >>> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:277) >>> at org.apache.spark.rdd.RDD.iterator(RDD.scala:244) >>> at >>> org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:35) >>> at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:277) >>> at org.apache.spark.rdd.RDD.iterator(RDD.scala:244) >>> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:63) >>> at org.apache.spark.scheduler.Task.run(Task.scala:70) >>> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:213) >>> at >>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) >>> at >>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) >>> at java.lang.Thread.run(Thread.java:745) >>> Caused by: com.esotericsoftware.kryo.KryoException: Error constructing >>> instance of class: com.lumiata.patientanalysis.utils.CachedGraph >>> at >>> com.twitter.chill.Instantiators$$anon$1.newInstance(KryoBase.scala:126) >>> at com.esotericsoftware.kryo.Kryo.newInstance(Kryo.java:1065) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.create(FieldSerializer.java:228) >>> at >>> com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:217) >>> at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:729) >>> at >>> org.apache.spark.serializer.KryoDeserializationStream.readObject(KryoSerializer.scala:182) >>> at >>> org.apache.spark.broadcast.TorrentBroadcast$.unBlockifyObject(TorrentBroadcast.scala:217) >>> at >>> org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1.apply(TorrentBroadcast.scala:178) >>> at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1254) >>> ... 24 more >>> Caused by: java.lang.reflect.InvocationTargetException >>> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) >>> at >>> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) >>> at >>> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) >>> at java.lang.reflect.Constructor.newInstance(Constructor.java:422) >>> at >>> com.twitter.chill.Instantiators$$anonfun$normalJava$1.apply(KryoBase.scala:160) >>> at >>> com.twitter.chill.Instantiators$$anon$1.newInstance(KryoBase.scala:123) >>> ... 32 more >>> Caused by: com.esotericsoftware.kryo.KryoException: Unable to find class: >>> com.i2028.Document.Document >>> at >>> com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:138) >>> at >>> com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:115) >>> at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:610) >>> at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:721) >>> at >>> com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:134) >>> at >>> com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:17) >>> at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:626) >>> at >>> com.lumiata.patientanalysis.utils.CachedGraph.loadCacheFromSerializedData(CachedGraph.java:221) >>> at >>> com.lumiata.patientanalysis.utils.CachedGraph.<init>(CachedGraph.java:182) >>> at >>> com.lumiata.patientanalysis.utils.CachedGraph.<init>(CachedGraph.java:178) >>> ... 38 more >>> Caused by: java.lang.ClassNotFoundException: com.i2028.Document.Document >>> at java.net.URLClassLoader.findClass(URLClassLoader.java:381) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:424) >>> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) >>> at java.lang.ClassLoader.loadClass(ClassLoader.java:357) >>> at java.lang.Class.forName0(Native Method) >>> at java.lang.Class.forName(Class.java:348) >>> at >>> com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:136) >>> ... 47 more >>> >>> >>> >>>> On Tue, Sep 8, 2015 at 6:01 AM Igor Berman <igor.ber...@gmail.com> >>>> wrote: >>>> >>>>> I wouldn't build on this. local mode & yarn are different so that jars >>>>> you use in spark submit are handled differently >>>>> >>>>> On 8 September 2015 at 15:43, Nicholas R. Peterson < >>>>> nrpeter...@gmail.com> wrote: >>>>> >>>>>> Thans, Igor; I've got it running again right now, and can attach the >>>>>> stack trace when it finishes. >>>>>> >>>>>> In the mean time, I've noticed something interesting: in the Spark >>>>>> UI, the application jar that I submit is not being included on the >>>>>> classpath. It has been successfully uploaded to the nodes -- in the >>>>>> nodemanager directory for the application, I see __app__.jar and >>>>>> __spark__.jar. The directory itself is on the classpath, and >>>>>> __spark__.jar >>>>>> and __hadoop_conf__ are as well. When I do everything the same but >>>>>> switch the master to local[*], the jar I submit IS added to the >>>>>> classpath. >>>>>> >>>>>> This seems like a likely culprit. What could cause this, and how can >>>>>> I fix it? >>>>>> >>>>>> Best, >>>>>> Nick >>>>>> >>>>>> On Tue, Sep 8, 2015 at 1:14 AM Igor Berman <igor.ber...@gmail.com> >>>>>> wrote: >>>>>> >>>>>>> as a starting point, attach your stacktrace... >>>>>>> ps: look for duplicates in your classpath, maybe you include another >>>>>>> jar with same class >>>>>>> >>>>>>> On 8 September 2015 at 06:38, Nicholas R. Peterson < >>>>>>> nrpeter...@gmail.com> wrote: >>>>>>> >>>>>>>> I'm trying to run a Spark 1.4.1 job on my CDH5.4 cluster, through >>>>>>>> Yarn. Serialization is set to use Kryo. >>>>>>>> >>>>>>>> I have a large object which I send to the executors as a Broadcast. >>>>>>>> The object seems to serialize just fine. When it attempts to >>>>>>>> deserialize, >>>>>>>> though, Kryo throws a ClassNotFoundException... for a class that I >>>>>>>> include >>>>>>>> in the fat jar that I spark-submit. >>>>>>>> >>>>>>>> What could be causing this classpath issue with Kryo on the >>>>>>>> executors? Where should I even start looking to try to diagnose the >>>>>>>> problem? I appreciate any help you can provide. >>>>>>>> >>>>>>>> Thank you! >>>>>>>> >>>>>>>> -- Nick >>>>>>>> >>>>>>> >>>>>>> >>>>> >>
