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I am getting this error when the flow comes to 'Execute a batch element' processor.

java.lang.ClassNotFoundException: org.apache.commons.csv.CSVFormat

I have nothing to do with CSV, and I am getting this error sometimes not all the time in the same flow.

When I added the dependency for commons-csv

I get the below exception

Message : Could not serialize object (org.mule.api.serialization.SerializationException).

    Root Exception stack trace:
java.util.ConcurrentModificationException
    at java.util.Vector$Itr.checkForComodification(Vector.java:1184)
    at java.util.Vector$Itr.next(Vector.java:1137)
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.write(CollectionSerializer.java:92)
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.write(CollectionSerializer.java:40)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
    at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:366)
    at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:307)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObjectOrNull(Kryo.java:606)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:87)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
    at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:366)
    at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:307)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
    at com.esotericsoftware.kryo.serializers.MapSerializer.write(MapSerializer.java:113)
    at com.esotericsoftware.kryo.serializers.MapSerializer.write(MapSerializer.java:39)
    at com.esotericsoftware.kryo.Kryo.writeObjectOrNull(Kryo.java:579)
    at com.mulesoft.module.serialization.kryo.internal.CopyOnWriteCaseInsensitiveMapSerializer.write(CopyOnWriteCaseInsensitiveMapSerializer.java:30)
    at com.mulesoft.module.serialization.kryo.internal.CopyOnWriteCaseInsensitiveMapSerializer.write(CopyOnWriteCaseInsensitiveMapSerializer.java:1)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.mulesoft.module.serialization.kryo.internal.MuleEventKryoSerializer.write(MuleEventKryoSerializer.java:36)
    at com.mulesoft.module.serialization.kryo.internal.MuleEventKryoSerializer.write(MuleEventKryoSerializer.java:1)
    at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:552)
    at com.esotericsoftware.kryo.serializers.ObjectField.write(ObjectField.java:80)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:518)
    at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:628)
    at com.mulesoft.module.serialization.kryo.internal.KryoObjectSerializer.doSerialize(KryoObjectSerializer.java:105)
    at com.mulesoft.module.serialization.kryo.internal.KryoObjectSerializer.doSerialize(KryoObjectSerializer.java:97)
    at org.mule.serialization.internal.AbstractObjectSerializer.serialize(AbstractObjectSerializer.java:64)
    at com.mulesoft.module.batch.engine.DefaultBatchJobInstanceStore.doStore(DefaultBatchJobInstanceStore.java:351)
    at com.mulesoft.module.batch.engine.DefaultBatchJobInstanceStore.store(DefaultBatchJobInstanceStore.java:96)
    at com.mulesoft.module.batch.engine.DefaultBatchEngine.createNewJobInstance(DefaultBatchEngine.java:226)
    at com.mulesoft.module.batch.DefaultBatchJob.execute(DefaultBatchJob.java:371)
    at com.mulesoft.module.batch.processor.BatchExecuteMessageProcessor.process(BatchExecuteMessageProcessor.java:49)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.processor.AsyncInterceptingMessageProcessor.process(AsyncInterceptingMessageProcessor.java:108)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.construct.DynamicPipelineMessageProcessor.process(DynamicPipelineMessageProcessor.java:55)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.interceptor.AbstractEnvelopeInterceptor.processBlocking(AbstractEnvelopeInterceptor.java:58)
    at org.mule.processor.AbstractRequestResponseMessageProcessor.process(AbstractRequestResponseMessageProcessor.java:47)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.processor.AbstractFilteringMessageProcessor.process(AbstractFilteringMessageProcessor.java:52)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.processor.AbstractRequestResponseMessageProcessor.processBlocking(AbstractRequestResponseMessageProcessor.java:56)
    at org.mule.processor.AbstractRequestResponseMessageProcessor.process(AbstractRequestResponseMessageProcessor.java:47)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.construct.Flow$2.process(Flow.java:138)
    at org.mule.construct.Flow$2.process(Flow.java:133)
    at org.mule.execution.ExecuteCallbackInterceptor.execute(ExecuteCallbackInterceptor.java:16)
    at org.mule.execution.CommitTransactionInterceptor.execute(CommitTransactionInterceptor.java:35)
    at org.mule.execution.CommitTransactionInterceptor.execute(CommitTransactionInterceptor.java:22)
    at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:30)
    at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:14)
    at org.mule.execution.BeginAndResolveTransactionInterceptor.execute(BeginAndResolveTransactionInterceptor.java:67)
    at org.mule.execution.SuspendXaTransactionInterceptor.execute(SuspendXaTransactionInterceptor.java:50)
    at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:28)
    at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:13)
    at org.mule.execution.ErrorHandlingExecutionTemplate.execute(ErrorHandlingExecutionTemplate.java:60)
    at org.mule.execution.ErrorHandlingExecutionTemplate.execute(ErrorHandlingExecutionTemplate.java:30)
    at org.mule.construct.Flow.process(Flow.java:132)
    at org.mule.module.apikit.AbstractRouter.processBlockingRequest(AbstractRouter.java:108)
    at org.mule.module.apikit.AbstractRouter.processBlocking(AbstractRouter.java:98)
    at org.mule.module.apikit.AbstractRouter.process(AbstractRouter.java:80)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.processor.AsyncInterceptingMessageProcessor.process(AsyncInterceptingMessageProcessor.java:108)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.construct.DynamicPipelineMessageProcessor.process(DynamicPipelineMessageProcessor.java:55)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.interceptor.AbstractEnvelopeInterceptor.processBlocking(AbstractEnvelopeInterceptor.java:58)
    at org.mule.processor.AbstractRequestResponseMessageProcessor.process(AbstractRequestResponseMessageProcessor.java:47)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.processor.AbstractFilteringMessageProcessor.process(AbstractFilteringMessageProcessor.java:52)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:98)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.processor.AbstractRequestResponseMessageProcessor.processBlocking(AbstractRequestResponseMessageProcessor.java:56)
    at org.mule.processor.AbstractRequestResponseMessageProcessor.process(AbstractRequestResponseMessageProcessor.java:47)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.processor.BlockingProcessorExecutor.executeNext(BlockingProcessorExecutor.java:88)
    at org.mule.processor.BlockingProcessorExecutor.execute(BlockingProcessorExecutor.java:59)
    at org.mule.execution.ExceptionToMessagingExceptionExecutionInterceptor.execute(ExceptionToMessagingExceptionExecutionInterceptor.java:27)
    at org.mule.execution.MessageProcessorNotificationExecutionInterceptor.execute(MessageProcessorNotificationExecutionInterceptor.java:108)
    at org.mule.execution.MessageProcessorExecutionTemplate.execute(MessageProcessorExecutionTemplate.java:44)
    at org.mule.construct.AbstractPipeline$3.process(AbstractPipeline.java:232)
    at org.mule.module.http.internal.listener.HttpMessageProcessorTemplate.routeEvent(HttpMessageProcessorTemplate.java:73)
    at org.mule.execution.AsyncResponseFlowProcessingPhase$1.process(AsyncResponseFlowProcessingPhase.java:72)
    at org.mule.execution.AsyncResponseFlowProcessingPhase$1.process(AsyncResponseFlowProcessingPhase.java:59)
    at org.mule.execution.ExecuteCallbackInterceptor.execute(ExecuteCallbackInterceptor.java:16)
    at org.mule.execution.CommitTransactionInterceptor.execute(CommitTransactionInterceptor.java:35)
    at org.mule.execution.CommitTransactionInterceptor.execute(CommitTransactionInterceptor.java:22)
    at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:30)
    at org.mule.execution.HandleExceptionInterceptor.execute(HandleExceptionInterceptor.java:14)
    at org.mule.execution.BeginAndResolveTransactionInterceptor.execute(BeginAndResolveTransactionInterceptor.java:67)
    at org.mule.execution.ResolvePreviousTransactionInterceptor.execute(ResolvePreviousTransactionInterceptor.java:44)
    at org.mule.execution.SuspendXaTransactionInterceptor.execute(SuspendXaTransactionInterceptor.java:50)
    at org.mule.execution.ValidateTransactionalStateInterceptor.execute(ValidateTransactionalStateInterceptor.java:40)
    at org.mule.execution.IsolateCurrentTransactionInterceptor.execute(IsolateCurrentTransactionInterceptor.java:41)
    at org.mule.execution.ExternalTransactionInterceptor.execute(ExternalTransactionInterceptor.java:48)
    at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:28)
    at org.mule.execution.RethrowExceptionInterceptor.execute(RethrowExceptionInterceptor.java:13)
    at org.mule.execution.TransactionalErrorHandlingExecutionTemplate.execute(TransactionalErrorHandlingExecutionTemplate.java:110)
    at org.mule.execution.AsyncResponseFlowProcessingPhase.runPhase(AsyncResponseFlowProcessingPhase.java:58)
    at org.mule.execution.AsyncResponseFlowProcessingPhase.runPhase(AsyncResponseFlowProcessingPhase.java:35)
    at org.mule.execution.PhaseExecutionEngine$InternalPhaseExecutionEngine.phaseSuccessfully(PhaseExecutionEngine.java:65)
    at org.mule.execution.PhaseExecutionEngine$InternalPhaseExecutionEngine.phaseSuccessfully(PhaseExecutionEngine.java:69)
    at com.mulesoft.mule.throttling.ThrottlingPhase.runPhase(ThrottlingPhase.java:187)
    at com.mulesoft.mule.throttling.ThrottlingPhase.runPhase(ThrottlingPhase.java:58)
    at org.mule.execution.PhaseExecutionEngine$InternalPhaseExecutionEngine.phaseSuccessfully(PhaseExecutionEngine.java:65)
    at com.mulesoft.gateway.http.phases.GatewayValidationPhase.runPhase(GatewayValidationPhase.java:93)
    at com.mulesoft.gateway.http.phases.GatewayValidationPhase.runPhase(GatewayValidationPhase.java:49)
    at org.mule.execution.PhaseExecutionEngine$InternalPhaseExecutionEngine.phaseSuccessfully(PhaseExecutionEngine.java:65)
    at org.mule.modules.cors.CorsPhase.runPhase(CorsPhase.java:112)
    at org.mule.modules.cors.CorsPhase.runPhase(CorsPhase.java:39)
    at org.mule.execution.PhaseExecutionEngine$InternalPhaseExecutionEngine.process(PhaseExecutionEngine.java:114)
    at org.mule.execution.PhaseExecutionEngine.process(PhaseExecutionEngine.java:41)
    at org.mule.execution.MuleMessageProcessingManager.processMessage(MuleMessageProcessingManager.java:32)
    at org.mule.module.http.internal.listener.DefaultHttpListener$1.handleRequest(DefaultHttpListener.java:133)
    at org.mule.module.http.internal.listener.grizzly.GrizzlyRequestDispatcherFilter.handleRead(GrizzlyRequestDispatcherFilter.java:83)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:526)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.mule.module.http.internal.listener.grizzly.ExecutorPerServerAddressIOStrategy.run0(ExecutorPerServerAddressIOStrategy.java:102)
    at org.mule.module.http.internal.listener.grizzly.ExecutorPerServerAddressIOStrategy.access$100(ExecutorPerServerAddressIOStrategy.java:30)
    at org.mule.module.http.internal.listener.grizzly.ExecutorPerServerAddressIOStrategy$WorkerThreadRunnable.run(ExecutorPerServerAddressIOStrategy.java:125)
    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)

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The flow calling the batch is very simple, basically just call the batch process. The error is coming from input phase of the batch where I have 'set variable's, 'database connector's, collection splitter-aggregator which makes calculations and modifies records.

mcvkr
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2 Answers2

1

@mCeviker, can you please share your flow? Normally, you will have to add the commons-csv dependency. Although the batch execute element does not require that dependency.

  • Thanks for the dependency ... I added it and not getting the class not found exception now .. but having another exception .. will update question – mcvkr Apr 25 '17 at 14:21
0

@mCeviker, you are probably trying to iterate over a collection (with a foreach) an try to modify it (remove elements) in the same loop. You should use an iterator instead. Maybe this link could help you.

Community
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  • I am using collection splitter-aggregator, I do not use for each in my code explicitly. I am not expecting it removes any elements from the collection but not sure how mule handles it behind the scenes – mcvkr Apr 25 '17 at 19:49
  • maybe it is better to update your answer instead of a new answer – mcvkr Apr 25 '17 at 19:51
  • could you please post more of your stack trace? – Cristina Rosca Apr 25 '17 at 19:58
  • the splitter acts as a foreach ..what do you do in the splitter exactly? Can't is be done without a splitter? – Cristina Rosca Apr 25 '17 at 20:13
  • Without splitter it would be something very similar. In the splitter-aggregator part; I pull up some data from db, store it to a hashmap and also store it in the original record as a new property ... this way I can use the hashmap as a cache – mcvkr Apr 25 '17 at 20:19
  • So if I understood well, you are splitting the result of a select and foreach record you do an update in the DB? – Cristina Rosca Apr 25 '17 at 20:27
  • I am splitting the result of a select, and making a DB call for each object* in the list and set the response as a new property to the original object. *To reduce unnecessary DB calls I cache the db result in a hashmap, so sometimes I do not go to database to set the new property. – mcvkr Apr 25 '17 at 20:32
  • Just to isolate the problem, If you remove the cache scope around the db call , do you still have the same error ? – Cristina Rosca Apr 25 '17 at 21:08