produer success but kafka shell consumer all "null"

[HuBlanker]

Configuration config = { { "metadata.broker.list", kafka_servers} }; Producer pp(config); MessageBuilder builder("***"); builder.partition(8); builder.payload("1999"); pp.produce(builder); pp.flush();
my code is like this.

producer success. consumer got one message. but it is null.

consumer is kafka shell consumer.

thanks for you time.

[kreuzerkrieg]

Same here. Did you find a way to solve this problem?