Ignite compute broadcast closure - class not found exception - ignite

Question

The code final Collection<Long> result = ignite.compute(group).broadcast(() -> 42L);
Throws an exception about not being to find the lambda's declaring class. What am I missing?
package com.example;
class IgniteSandbox() {
...
public static void main(String... args) {
...
final Collection<Long> result = ignite.compute(group).broadcast(() -> 42L);
}
}
java.lang.ClassNotFoundException: com.example.IgniteSandbox
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.ignite.internal.util.IgniteUtils.forName(IgniteUtils.java:8608)
at org.apache.ignite.internal.MarshallerContextImpl.getClass(MarshallerContextImpl.java:349)
at org.apache.ignite.internal.binary.BinaryContext.descriptorForTypeId(BinaryContext.java:688)
... 30 common frames omitted
Wrapped by: org.apache.ignite.binary.BinaryInvalidTypeException: com.example.IgniteSandbox
at org.apache.ignite.internal.binary.BinaryContext.descriptorForTypeId(BinaryContext.java:697)
at org.apache.ignite.internal.binary.BinaryUtils.doReadClass(BinaryUtils.java:1631)
at org.apache.ignite.internal.binary.BinaryUtils.doReadClass(BinaryUtils.java:1568)
at org.apache.ignite.internal.binary.BinaryUtils.doReadClass(BinaryUtils.java:1545)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.readClass(BinaryReaderExImpl.java:380)
at org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.readFixedType(BinaryFieldAccessor.java:902)
at org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.read0(BinaryFieldAccessor.java:698)
at org.apache.ignite.internal.binary.BinaryFieldAccessor.read(BinaryFieldAccessor.java:183)
... 23 common frames omitted
Wrapped by: org.apache.ignite.binary.BinaryObjectException: Failed to read field [name=capturingClass]
at org.apache.ignite.internal.binary.BinaryFieldAccessor.read(BinaryFieldAccessor.java:187)
at org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:870)
... 22 common frames omitted
Wrapped by: org.apache.ignite.binary.BinaryObjectException: Failed to deserialize object [typeName=java.lang.invoke.SerializedLambda]
at org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:909)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize0(BinaryReaderExImpl.java:1762)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1714)
at org.apache.ignite.internal.binary.BinaryUtils.doReadObject(BinaryUtils.java:1793)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.readObject(BinaryReaderExImpl.java:1329)
at org.apache.ignite.internal.processors.closure.GridClosureProcessor$C2.readBinary(GridClosureProcessor.java:1872)
at org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:860)
... 16 common frames omitted
Wrapped by: org.apache.ignite.binary.BinaryObjectException: Failed to deserialize object [typeName=org.apache.ignite.internal.processors.closure.GridClosureProcessor$C2]
at org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:909)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize0(BinaryReaderExImpl.java:1762)
at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1714)
at org.apache.ignite.internal.binary.GridBinaryMarshaller.deserialize(GridBinaryMarshaller.java:310)
at org.apache.ignite.internal.binary.BinaryMarshaller.unmarshal0(BinaryMarshaller.java:99)
at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.unmarshal(AbstractNodeNameAwareMarshaller.java:82)
at org.apache.ignite.internal.util.IgniteUtils.unmarshal(IgniteUtils.java:9962)
... 10 common frames omitted
Wrapped by: org.apache.ignite.IgniteCheckedException: Failed to deserialize object [typeName=org.apache.ignite.internal.processors.closure.GridClosureProcessor$C2]
at org.apache.ignite.internal.util.IgniteUtils.unmarshal(IgniteUtils.java:9968)
at org.apache.ignite.internal.processors.job.GridJobWorker.initialize(GridJobWorker.java:440)
... 9 common frames omitted
Wrapped by: org.apache.ignite.IgniteException: Failed to deserialize object [typeName=org.apache.ignite.internal.processors.closure.GridClosureProcessor$C2]
at org.apache.ignite.internal.processors.job.GridJobWorker.initialize(GridJobWorker.java:459)
at org.apache.ignite.internal.processors.job.GridJobProcessor.processJobExecuteRequest(GridJobProcessor.java:1117)
at org.apache.ignite.internal.processors.job.GridJobProcessor$JobExecutionListener.onMessage(GridJobProcessor.java:1921)
at org.apache.ignite.internal.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1556)
at org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:1184)
at org.apache.ignite.internal.managers.communication.GridIoManager.access$4200(GridIoManager.java:125)
at org.apache.ignite.internal.managers.communication.GridIoManager$9.run(GridIoManager.java:1091)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Answer 1

Did you enable peerClassLoading?
If not, you should have com.example.IgniteSandbox class with all dependencies on all nodes participating in computation.