Hi,

I have Ignite (version 1.7.0) setup to do streaming, and a
autoFlushFrequency of 15 (for now) - in the logs, I'm getting this during
processing - any ideas on what this is coming from?

2016-09-13T17:31:52,580 - ERROR
[grid-data-loader-flusher-#55%null%:Slf4jLogger@112] - Runtime error caught
during grid runnable execution: GridWorker [name=grid-data-loader-flusher,
gridName=null, finished=false, isCancelled=false, hashCode=1315116657,
interrupted=false, runner=grid-data-loader-flusher-#55%null%]
org.apache.ignite.binary.BinaryObjectException: Failed to marshal object
with optimized marshaller: org.apache.ignite.stream.StreamVisitor$1@4e8b328a
        at
org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:167)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:132)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.binary.GridBinaryMarshaller.marshal(GridBinaryMarshaller.java:239)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.binary.BinaryMarshaller.marshal(BinaryMarshaller.java:92)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.processors.datastreamer.DataStreamerImpl$Buffer.submit(DataStreamerImpl.java:1362)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.processors.datastreamer.DataStreamerImpl$Buffer.flush(DataStreamerImpl.java:1248)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.processors.datastreamer.DataStreamerImpl.tryFlush(DataStreamerImpl.java:970)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.processors.datastreamer.DataStreamProcessor$2.body(DataStreamProcessor.java:108)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
[ignite-core-1.7.0.jar:1.7.0]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_31]
Caused by: org.apache.ignite.IgniteCheckedException: Failed to serialize
object: org.apache.ignite.stream.StreamVisitor$1@4e8b328a
        at
org.apache.ignite.marshaller.optimized.OptimizedMarshaller.marshal(OptimizedMarshaller.java:197)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:160)
~[ignite-core-1.7.0.jar:1.7.0]
        ... 9 more
Caused by: java.io.IOException: java.util.ConcurrentModificationException
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:347)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeArray(OptimizedObjectOutputStream.java:267)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:698)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObjectOverride(OptimizedObjectOutputStream.java:161)
~[ignite-core-1.7.0.jar:1.7.0]
        at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
~[?:1.8.0_31]
        at
org.apache.ignite.marshaller.optimized.OptimizedMarshaller.marshal(OptimizedMarshaller.java:192)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:160)
~[ignite-core-1.7.0.jar:1.7.0]
        ... 9 more
Caused by: java.util.ConcurrentModificationException
        at
java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966)
~[?:1.8.0_31]
        at java.util.LinkedList$ListItr.next(LinkedList.java:888)
~[?:1.8.0_31]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeLinkedList(OptimizedObjectOutputStream.java:418)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:733)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeArrayList(OptimizedObjectOutputStream.java:368)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:718)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObjectOverride(OptimizedObjectOutputStream.java:161)
~[ignite-core-1.7.0.jar:1.7.0]
        at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
~[?:1.8.0_31]
        at
java.util.concurrent.ConcurrentHashMap.writeObject(ConcurrentHashMap.java:1413)
~[?:1.8.0_31]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[?:1.8.0_31]
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:1.8.0_31]
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:1.8.0_31]
        at java.lang.reflect.Method.invoke(Method.java:483) ~[?:1.8.0_31]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:341)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeArray(OptimizedObjectOutputStream.java:267)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:698)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeFields(OptimizedObjectOutputStream.java:539)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeSerializable(OptimizedObjectOutputStream.java:351)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedClassDescriptor.write(OptimizedClassDescriptor.java:800)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObject0(OptimizedObjectOutputStream.java:247)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.marshaller.optimized.OptimizedObjectOutputStream.writeObjectOverride(OptimizedObjectOutputStream.java:161)
~[ignite-core-1.7.0.jar:1.7.0]
        at
java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:344)
~[?:1.8.0_31]
        at
org.apache.ignite.marshaller.optimized.OptimizedMarshaller.marshal(OptimizedMarshaller.java:192)
~[ignite-core-1.7.0.jar:1.7.0]
        at
org.apache.ignite.internal.binary.BinaryWriterExImpl.marshal(BinaryWriterExImpl.java:160)
~[ignite-core-1.7.0.jar:1.7.0]
        ... 9 more



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