Description
Currently, we have the following paths in ZK that stores non-singleton values.
1. Topic assignment value:
/brokers/topics/topic
2. LeaderAndISR info:
/brokers/topics/test/partitions/0/leaderAndISR
3. broker registration:
/brokers/ids/0
192.168.1.148:9092:9999
4. partition reassignment path
It would be good if we do the following:
a. make them true json (e.g., using number as the value for broker/partition, instead of string).
b. add version support for future growth.