Hi All, I am trying to preload the data using below code snippet which worked perfectly fine with Ignite 2.6 (with native persistence enabled) however when I run same piece of code on 2.7 (with native persistence enabled) it throws below exception.
1. Code snippet - running as a compute task public void run() { try (QueryCursor cur = ignite.cache(cacheName).query(new ScanQuery().setLocal(true).setPartition(part))) { for (Object ignored : cur) ; } } 2. Exception : [15:16:46,798][SEVERE][mgmt-#142%IgnitePRELOADClient-3812839287364599935%][GridTaskWorker] Error deserializing job response: GridJobExecuteResponse [nodeId=364db340-9abb-4e75-9430-ed1c17a3b509, sesId=674bd43a861-867685a3-0338-4093-a2ef-baff62f92fc6, jobId=774bd43a861-867685a3-0338-4093-a2ef-baff62f92fc6, gridEx=null, isCancelled=false, retry=null] class org.apache.ignite.IgniteCheckedException: Failed to unmarshal object with optimized marshaller at org.apache.ignite.internal.util.IgniteUtils.unmarshal(IgniteUtils.java:10146) at org.apache.ignite.internal.processors.task.GridTaskWorker.onResponse(GridTaskWorker.java:831) at org.apache.ignite.internal.processors.task.GridTaskProcessor.processJobExecuteResponse(GridTaskProcessor.java:1081) at org.apache.ignite.internal.processors.task.GridTaskProcessor$JobMessageListener.onMessage(GridTaskProcessor.java:1316) at org.apache.ignite.internal.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1569) at org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:1197) at org.apache.ignite.internal.managers.communication.GridIoManager.access$4200(GridIoManager.java:127) at org.apache.ignite.internal.managers.communication.GridIoManager$9.run(GridIoManager.java:1093) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: class org.apache.ignite.binary.BinaryObjectException: Failed to unmarshal object with optimized marshaller at org.apache.ignite.internal.binary.BinaryUtils.doReadOptimized(BinaryUtils.java:1765) at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize0(BinaryReaderExImpl.java:1964) at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1716) at org.apache.ignite.internal.binary.GridBinaryMarshaller.deserialize(GridBinaryMarshaller.java:313) at org.apache.ignite.internal.binary.BinaryMarshaller.unmarshal0(BinaryMarshaller.java:102) at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:82) at org.apache.ignite.internal.util.IgniteUtils.unmarshal(IgniteUtils.java:10140) ... 10 more Caused by: class org.apache.ignite.IgniteCheckedException: Failed to deserialize object with given class loader: [clsLdr=sun.misc.Launcher$AppClassLoader@4554617c, err=Failed to deserialize object [typeName=org.apache.ignite.internal.util.lang.GridTuple3]] at org.apache.ignite.internal.marshaller.optimized.OptimizedMarshaller.unmarshal0(OptimizedMarshaller.java:237) at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:94) at org.apache.ignite.internal.binary.BinaryUtils.doReadOptimized(BinaryUtils.java:1762) ... 16 more Caused by: java.io.IOException: Failed to deserialize object [typeName=org.apache.ignite.internal.util.lang.GridTuple3] at org.apache.ignite.internal.marshaller.optimized.OptimizedObjectInputStream.readObject0(OptimizedObjectInputStream.java:350) Caused by: java.io.IOException: Unexpected error occurred during unmarshalling of an instance of the class: org.apache.ignite.internal.processors.cache.CacheMetricsSnapshot. Check that all nodes are running the same version of Ignite and that all nodes have GridOptimizedMarshaller configured with identical optimized classes lists, if any (see setClassNames and setClassNamesPath methods). If your serialized classes implement java.io.Externalizable interface, verify that serialization logic is correct. at org.apache.ignite.internal.marshaller.optimized.OptimizedObjectInputStream.readObject0(OptimizedObjectInputStream.java:364) at org.apache.ignite.internal.marshaller.optimized.OptimizedObjectInputStream.readObjectOverride(OptimizedObjectInputStream.java:198) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:422) at org.apache.ignite.spi.discovery.tcp.internal.TcpDiscoveryNode.readExternal(TcpDiscoveryNode.java:616) at org.apache.ignite.internal.marshaller.optimized.OptimizedObjectInputStream.readExternalizable(OptimizedObjectInputStream.java:555) at org.apache.ignite.internal.marshaller.optimized.OptimizedClassDescriptor.read(OptimizedClassDescriptor.java:949) at org.apache.ignite.internal.marshaller.optimized.OptimizedObjectInputStream.readObject0(OptimizedObjectInputStream.java:346) Can anyone please update me on this ? whether it's an expected one or am I missing something ? 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