[IGNITE-4865] Non-informative error message on using GridClientOptimizedMarshaller with unknown task classes

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.0
• Component/s: clients
• Assignee: Alexandr Kuramshin
• Reporter: Alexandr Kuramshin
• Created: 27/Mar/17 10:04
• Updated: 25/Sep/17 08:23

Description

Upon GridClientCompute.execute() I get non-informative error if a task class is not present in classnames.properties. It occurs when GridClient was configured to use GridClientOptimizedMarshaller.

Closing NIO session because of unhandled exception [cls=class o.a.i.i.util.nio.GridNioException, msg=class o.a.i.IgniteCheckedException: Failed to deserialize object with given class loader: null]

There is two problems:

• Actual problem was hidden

  Caused by: java.lang.UnsupportedOperationException
      at org.apache.ignite.internal.client.marshaller.optimized.GridClientOptimizedMarshaller$ClientMarshallerContext.className(GridClientOptimizedMarshaller.java:137)
      at org.apache.ignite.internal.MarshallerContextAdapter.getClass(MarshallerContextAdapter.java:174)
      at org.apache.ignite.marshaller.optimized.OptimizedMarshallerUtils.classDescriptor(OptimizedMarshallerUtils.java:266)
      at org.apache.ignite.marshaller.optimized.OptimizedObjectInputStream.readObjectOverride(OptimizedObjectInputStream.java:318)
      at java.io.ObjectInputStream.readObject(ObjectInputStream.java:367)
  

• Even reading the cause we don't understand what is wrong

What to do:

• Log stacktrace every time
• Throw UnsupportedOperationException with informative message.

Issue Links

• links to: GitHub Pull Request #1675