Note that the key is provided by the application. Kafka itself makes no effort to make sure messages are in key order.
Thanks, Jun On Mon, May 13, 2013 at 8:34 AM, Yu, Libo <libo...@citi.com> wrote: > Thanks for both of you. The key is actually very useful. If the key > increases > monotonically, it can be used as the version of the message. Say version 1 > is sent first followed by version 2. It is possible that version 2 is > received first > by the consumer. When version 1 is received, it will be ignored if version > 2 > has already been received. > > > Regards, > > Libo > >
