Even not working optimally?

[simplesteph]

The even mode in balance is the following:

even - This is a specialized type for clusters which have topics that have a number of partitions that are a multiple of the number of brokers. The module assures that every broker has exactly the same number of partitions for each topic.

Yet the code tries to SSH to my brokers?

[ec2-user@ip-172-31-12-216 ~]$ kafka-assigner  -z $ZK_HOST -e balance --types even
[INFO] Connecting to zookeeper 172.31.9.21:2181
[INFO] Getting partition list from Zookeeper
[INFO] Closing connection to zookeeper
[INFO] Getting partition sizes via SSH for 172.31.32.31
[INFO] Getting partition sizes via SSH for 172.31.9.32
[INFO] Getting partition sizes via SSH for 172.31.16.33
[INFO] Getting partition sizes via SSH for 172.31.16.34
[INFO] Starting even partition balance

I would have guessed the even module could just connect to Zookeeper to distribute partitions evenly?

[kpocius]

As explained on #63:

It evenly balances the partitions across the brokers, and any "extra partitions" are evenly distributed within the cluster.

I believe that's what SSH'ing is for -- to figure out where to place the remainder of partitions.