The priority value of subsequent coprocessors in the Coprocessor.Priority.SYSTEM list are not incremented by one

// The Coprocessor.PRIORITY_SYSTEM should be replaced by priority
        this.coprocessors.add(loadInstance(implClass, Coprocessor.PRIORITY_SYSTEM, conf));
        LOG.info("System coprocessor " + className + " was loaded " +
            "successfully with priority (" + priority++ + ").");