IndexOutOfBoundsException while combining async producer and SimpleConsumer

[pprun]

Steps:

1. 10K send by a producer with props.put("producer.type", "async");
2. try to consume by index simpleConsumer1.consume("test-topic", index, 1024); in bounded while loop
3. after the the first iteration, it failed with:
   Exception in thread "main" java.lang.IndexOutOfBoundsException
   at com.leansoft.luxun.common.exception.ErrorMapper.toException(ErrorMapper.java:34)
   at com.leansoft.luxun.consumer.SimpleConsumer.consume(SimpleConsumer.java:86)