Java Out Of Heap space

[cyberluke]

My project worked fine until I add these lines:

public static interface RequestMapper extends ObjectMapper<JSONDSRequest> {}

`RequestMapper mapper = GWT.create( RequestMapper.class );

	JSONDSRequest r = new JSONDSRequest();
	r.records = request.getExportData();

    String json = mapper.write( r );       
    
    
    GWT.log( json ); // > {"firstName":"John","lastName":"Doe"}`

`import com.smartgwt.client.data.Record;

public class JSONDSRequest {
public Record[] records;
}
`

Also it writes a lot of warnings and compilation is very slow now. Of course I have increased the memory.

Compiler arguments:
-draftCompile

VM arguments:
-Xms2048m -Xmx4096m -XX:+UseConcMarkSweepGC

*Win10 64-bit,Eclipse,Java8,SmartGWT,RestyGWT,GWT 2.8