[KAFKA-755] standardizing json values stored in ZK

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.8.0
• Component/s: core
• Labels: p1
• Assignee: Swapnil Ghike
• Reporter: Jun Rao
• Created: 11/Feb/13 17:48
• Updated: 24/Feb/13 20:18
• Resolved: 23/Feb/13 00:44

Description

Currently, we have the following paths in ZK that stores non-singleton values.

1. Topic assignment value:
/brokers/topics/topic

{ "0": ["0"] }

2. LeaderAndISR info:
/brokers/topics/test/partitions/0/leaderAndISR

{ "ISR":"0,1","leader":"0","controllerEpoch":"1","leaderEpoch":"0" }

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.