I'm afraid that I don't have enough information to troubleshoot problem in com.XXX.XXX. It would be great if you can create a minimal example project that can reproduce the same issue.
Regards, Tomo On Wed, Jun 26, 2019 at 9:20 PM big data <[email protected]> wrote: > Hi, > > Actually, the class com.XXX.XXX is normally called in the before spark > code, and this exception error is happened in one static method of this > class. > > So the jar dependency problem can be excluded. > > 在 2019/6/26 下午10:23, Tomo Suzuki 写道: > > Hi Big data, > > > > I don't use SerializationUtils, but if I interpret the error message: > > > > ClassNotFoundException: com.XXXX.XXXX > > > > , this says com.XXXX.XXXX is not available in the class path of JVM > (which > > your Spark is running on). I would verify that you can instantiate > > com.XXXX.XXXX in Spark/Scala *without* SerializationUtils. > > > > Regards, > > Tomo > > > > > > > > On Wed, Jun 26, 2019 at 4:12 AM big data <[email protected]> > wrote: > > > >> I use Apache Commons Lang3's SerializationUtils in the code. > >> > >> SerializationUtils.serialize() > >> > >> to store a customized class as files into disk and > >> > >> SerializationUtils.deserialize(byte[]) > >> > >> to restore them again. > >> > >> In the local environment (Mac OS), all serialized files can be > >> deserialized normally and no error happens. But when I copy these > >> serialized files into HDFS, and read them from HDFS by using > Spark/Scala, a > >> SerializeException happens. > >> > >> The Apache Commons Lang3 version is: > >> > >> <dependency> > >> <groupId>org.apache.commons</groupId> > >> <artifactId>commons-lang3</artifactId> > >> <version>3.9</version> > >> </dependency> > >> > >> > >> the stack error as below: > >> > >> org.apache.commons.lang3.SerializationException: > >> java.lang.ClassNotFoundException: com.XXXX.XXXX > >> at > >> > org.apache.commons.lang3.SerializationUtils.deserialize(SerializationUtils.java:227) > >> at > >> > org.apache.commons.lang3.SerializationUtils.deserialize(SerializationUtils.java:265) > >> at com.com.XXXX.XXXX.deserializeFrom(XXX.java:81) > >> at com.XXX.FFFF$$anonfun$3.apply(BXXXX.scala:157) > >> at com.XXX.FFFF$$anonfun$3.apply(BXXXX.scala:153) > >> at scala.collection.Iterator$$anon$11.next(Iterator.scala:409) > >> at scala.collection.Iterator$class.foreach(Iterator.scala:893) > >> at scala.collection.AbstractIterator.foreach(Iterator.scala:1336) > >> at > >> scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:59) > >> at > >> > scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:104) > >> at > >> scala.collection.mutable.ArrayBuffer.$plus$plus$eq(ArrayBuffer.scala:48) > >> at scala.collection.TraversableOnce$class.to > >> (TraversableOnce.scala:310) > >> at scala.collection.AbstractIterator.to(Iterator.scala:1336) > >> at > >> > scala.collection.TraversableOnce$class.toBuffer(TraversableOnce.scala:302) > >> at scala.collection.AbstractIterator.toBuffer(Iterator.scala:1336) > >> at > >> > scala.collection.TraversableOnce$class.toArray(TraversableOnce.scala:289) > >> at scala.collection.AbstractIterator.toArray(Iterator.scala:1336) > >> at > >> > org.apache.spark.rdd.RDD$$anonfun$collect$1$$anonfun$12.apply(RDD.scala:945) > >> at > >> > org.apache.spark.rdd.RDD$$anonfun$collect$1$$anonfun$12.apply(RDD.scala:945) > >> at > >> > org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2074) > >> at > >> > org.apache.spark.SparkContext$$anonfun$runJob$5.apply(SparkContext.scala:2074) > >> at > org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87) > >> at org.apache.spark.scheduler.Task.run(Task.scala:109) > >> at > >> org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:345) > >> at > >> > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > >> at > >> > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > >> at java.lang.Thread.run(Thread.java:748) > >> Caused by: java.lang.ClassNotFoundException: com.XXXX.XXXX > >> at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > >> at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > >> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349) > >> at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > >> at java.lang.Class.forName0(Native Method) > >> at java.lang.Class.forName(Class.java:348) > >> at > java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:686) > >> at > >> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1868) > >> at > java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1751) > >> at > >> > java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2042) > >> at > java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1573) > >> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431) > >> at > >> > org.apache.commons.lang3.SerializationUtils.deserialize(SerializationUtils.java:223) > >> > >> I've check the loaded byte[]'s length, both from local and from HDFS are > >> same. But why it can not be deserialized from HDFS? > >> > > > -- Regards, Tomo
