Gridgain serialization exception

Question

I am trying out gridgain for the first time and facing some issues with serialization. While trying to use GridClosure to project jobs on different nodes I get marshaling exception . On debugging, It seems the failure is always for Apache log4j Logger object. Its difficult for me to avoid loggers and wanted to understand if this is a known issue or someway I can remedy this. I have requireSerializable set to false for my grid config.

Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream.writeSerializable(GridOptimizedObjectOutputStream.java:292)
    ... 45 more
Caused by: java.io.IOException: java.lang.reflect.InvocationTargetException
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream.writeSerializable(GridOptimizedObjectOutputStream.java:295)
    at org.gridgain.grid.marshaller.optimized.GridOptimizedClassDescriptor.write(GridOptimizedClassDescriptor.java:849)
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream.writeObject0(GridOptimizedObjectOutputStream.java:198)
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream.writeObjectOverride(GridOptimizedObjectOutputStream.java:129)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:342)
    at java.util.Hashtable.writeObject(Hashtable.java:988)
    ... 50 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream.writeSerializable(GridOptimizedObjectOutputStream.java:292)
    ... 55 more
Caused by: java.lang.NullPointerException
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream$PutFieldImpl.value(GridOptimizedObjectOutputStream.java:1003)
    at org.gridgain.grid.marshaller.optimized.GridOptimizedObjectOutputStream$PutFieldImpl.put(GridOptimizedObjectOutputStream.java:965)
    at java.util.Vector.writeObject(Vector.java:1068)
    ... 60 more

Dmitriy Dmitriy · Accepted Answer · 2014-06-04T00:36:48

Can you make Log4J object static so it does not affect serialization? If not, GridGain allows you to inject logger resource into pretty much anything, including closures. You can configure GridLogger as GridLog4jLogger in GridConfiguration.

Here is an example:

GridRunnable run = new GridRunnable() {
    // Can be any logger, including GridLog4jLogger.
    @GridLoggerResource
    GridLogger log;

    @Override public void run() {
        log.info("Hello");

        // Do some logic.
    }
}

or

// Can be any logger, including GridLog4jLogger
final GridLogger log = grid.log();

GridRunnable run = new GridRunnable() {
    @Override public void run() {
        log.info("Hello");

        // Do some logic.
    }
}

For more information, refer to Resource Injection page in GridGain documentation.

Gridgain serialization exception

1 Answers