If you add partitions, existing partitions' assignment won't change. Changing the replica assignment subsequently should be fine.
Thanks, Jun On Wed, Nov 12, 2014 at 2:24 PM, Allen Wang <aw...@netflix.com.invalid> wrote: > I found this JIRA > > https://issues.apache.org/jira/browse/KAFKA-1656 > > Now, we have to use two commands to accomplish the goal - first add > partitions using TopicCommand and then reassign replicas using > ReassignPartitionsCommand. When we first add partitions, will it change the > assignment of replicas for existing partitions? This is what we would like > to avoid. Also, will there be any issues executing the second reassignment > command which will change the assignment again for the new partitions > added? > > > > > On Sun, Nov 9, 2014 at 9:01 PM, Jun Rao <jun...@gmail.com> wrote: > > > Yes, it seems that we need to fix the tool to support that. It's probably > > more intuitive to have TopicCommand just take the replica-assignment (for > > the new partitions) when altering a topic. Could you file a jira? > > > > Thanks, > > > > Jun > > > > On Fri, Nov 7, 2014 at 4:17 PM, Allen Wang <aw...@netflix.com.invalid> > > wrote: > > > > > I am trying to figure out how to add partitions and assign replicas > using > > > one admin command. I tried kafka.admin.TopicCommand to increase the > > > partition number from 9 to 12 with the following options: > > > > > > /apps/kafka/bin/kafka-run-class.sh kafka.admin.TopicCommand > --zookeeper > > > ${ZOOKEEPER} --alter --topic test_topic_4 --partitions 12 > > > --replica-assignment 2:1,0:2,1:0,1:2,2:0,0:1,1:0,2:1,0:2,2:1,0:2,1:0 > > > > > > This gives me an error > > > > > > Option "[replica-assignment]" can't be used with option"[partitions]" > > > > > > Looking into the TopicCommand, alterTopic function seems to be able to > > > handle that but the command exits with the above error before this > > function > > > is invoked. > > > > > > Is there any workaround or other recommended way to achieve this? > > > > > > Thanks, > > > Allen > > > > > >
