protected OperatorStats stats = null;
protected OperatorContext oContext = null;
public BaseRootExec(FragmentContext context, PhysicalOperator config) throws OutOfMemoryException {
this.oContext = new OperatorContext(config, context, stats, true);
stats = new OperatorStats(new OpProfileDef(config.getOperatorId(),
config.getOperatorType(), OperatorContext.getChildCount(config)),
oContext.getAllocator());
context.getStats().addOperatorStats(this.stats);
}