Lost characters when send non-ascii strings

[cw-flying]

When Send Chinese message, lost some characters...

 kafkaesque.produce({topic: 'testing', partition: 0},
        '测aaa',
        function(err, response) {
                if (err) {
                    console.log(err);
                } else {

                }
                console.log(response);
            });

Run kafka consumer on cosole

flying@Server:~/kafka$ bin/kafka-console-consumer.sh --zookeeper localhost:2181 --topic testing
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
测a

It should be "测aaa", but only received "测a"!