Re: Can anyone help me to send messages in their original order?

2018-05-26 Thread Damian Guy
Hi Raymond, If you want all messages delivered in order then you should create the topic with 1 partition. If you want ordering guarantees for messages with the same key, then you need to produce the messages with a key. Using the console producer you can do that by adding --property "parse.key=tr

Re: Can anyone help me to send messages in their original order?

2018-05-26 Thread Raymond Xie
Thank you so much Hans for your enlightening, it is definitely greatly helpful to me as a new starter. So for my case, what is the right options I should put together to run the commands for producer and consumer respectively? Thanks. ** *Sincerel

Re: Can anyone help me to send messages in their original order?

2018-05-26 Thread Hans Jespersen
There are two concepts in Kafka that are not always familiar to people who have used other pub/sub systems. 1) partitions: Kafka topics are partitioned which means a single topic is sharded into multiple pieces that are distributed across multiple brokers in the cluster for parallel processi

Re: Can anyone help me to send messages in their original order?

2018-05-26 Thread Raymond Xie
Thanks. By default, can you explain me why I received the message in wrong order? Note there are only 9 lines from 1 to 9, but on consumer side their original order becomes messed up. ~~~sent from my cell phone, sorry if there is any typo Hans Jespersen 于 2018年5月26日周六 上午12:16写道: > If you create