运行一段时间后，火花流开始为未找到类提供异常。 341的第com.slhan.service.BusinessService行用于获取广播变量的值。例外如下。
18/09/08 13:50:02 ERROR scheduler.JobScheduler: Error running job streaming job 1536385800000 ms.1 java.io.IOException: com.esotericsoftware.kryo.KryoException: Unable to find class: com.slhan.service.BusinessService$$Lambda$34/1474137187 Serialization trace: f$1 (org.apache.spark.api.java.JavaPairRDD$$anonfun$filter$1) cleanF$3 (org.apache.spark.rdd.RDD$$anonfun$filter$1$$anonfun$apply$5) f (org.apache.spark.rdd.MapPartitionsRDD) rdd (org.apache.spark.api.java.JavaPairRDD) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1222) 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.slhan.service.BusinessService.lambda$1(BusinessService.java:341) at org.apache.spark.streaming.api.java.JavaDStreamLike$$anonfun$foreachRDD$3.apply(JavaDStreamLike.scala:335) at org.apache.spark.streaming.api.java.JavaDStreamLike$$anonfun$foreachRDD$3.apply(JavaDStreamLike.scala:335) at org.apache.spark.streaming.dstream.DStream$$anonfun$foreachRDD$1$$anonfun$apply$mcV$sp$3.apply(DStream.scala:661) at org.apache.spark.streaming.dstream.DStream$$anonfun$foreachRDD$1$$anonfun$apply$mcV$sp$3.apply(DStream.scala:661) at org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(ForEachDStream.scala:50) at org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1$$anonfun$apply$mcV$sp$1.apply(ForEachDStream.scala:50) at org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1$$anonfun$apply$mcV$sp$1.apply(ForEachDStream.scala:50) at org.apache.spark.streaming.dstream.DStream.createRDDWithLocalProperties(DStream.scala:426) at org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1.apply$mcV$sp(ForEachDStream.scala:49) at org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1.apply(ForEachDStream.scala:49) at org.apache.spark.streaming.dstream.ForEachDStream$$anonfun$1.apply(ForEachDStream.scala:49) at scala.util.Try$.apply(Try.scala:161) at org.apache.spark.streaming.scheduler.Job.run(Job.scala:39) at org.apache.spark.streaming.scheduler.JobScheduler$JobHandler$$anonfun$run$1.apply$mcV$sp(JobScheduler.scala:224) at org.apache.spark.streaming.scheduler.JobScheduler$JobHandler$$anonfun$run$1.apply(JobScheduler.scala:224) at org.apache.spark.streaming.scheduler.JobScheduler$JobHandler$$anonfun$run$1.apply(JobScheduler.scala:224) at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57) at org.apache.spark.streaming.scheduler.JobScheduler$JobHandler.run(JobScheduler.scala:223) 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:748) Caused by: com.esotericsoftware.kryo.KryoException: Unable to find class: com.slhan.service.BusinessService$$Lambda$34/1474137187 Serialization trace: f$1 (org.apache.spark.api.java.JavaPairRDD$$anonfun$filter$1) cleanF$3 (org.apache.spark.rdd.RDD$$anonfun$filter$1$$anonfun$apply$5) f (org.apache.spark.rdd.MapPartitionsRDD) rdd (org.apache.spark.api.java.JavaPairRDD) at com.esotericsoftware.kryo.util.DefaultClassResolver.readName(DefaultClassResolver.java:138) at com.esotericsoftware.kryo.util.DefaultClassResolver.readClass(DefaultClassResolver.java:115) at com.esotericsoftware.kryo.Kryo.readClass(Kryo.java:610) at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:599) at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221) at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:648) at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:605) at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221) at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:648) at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:605) at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221) at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:648) at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:605) at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221) at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:729) at org.apache.spark.serializer.KryoDeserializationStream.readObject(KryoSerializer.scala:228) at org.apache.spark.serializer.DeserializationStream$$anon$1.getNext(Serializer.scala:181) at org.apache.spark.util.NextIterator.hasNext(NextIterator.scala:73) at org.apache.spark.storage.MemoryStore.unrollSafely(MemoryStore.scala:282) at org.apache.spark.storage.MemoryStore.putIterator(MemoryStore.scala:169) at org.apache.spark.storage.BlockManager.doGetLocal(BlockManager.scala:541) at org.apache.spark.storage.BlockManager.getLocal(BlockManager.scala:420) at org.apache.spark.broadcast.TorrentBroadcast$$anonfun$readBroadcastBlock$1.apply(TorrentBroadcast.scala:168) at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1219) ... 27 more Caused by: java.lang.ClassNotFoundException: com.slhan.service.BusinessService$$Lambda$34/1474137187 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) ... 50 more