[KAFKA-337] upgrade ZKClient to allow conditional updates in ZK

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.8.0
• Component/s: core
• Assignee: Jun Rao
• Reporter: Jun Rao
• Created: 07/May/12 17:18
• Updated: 20/Jun/12 01:32
• Resolved: 20/Jun/12 01:32

Description

Based on https://cwiki.apache.org/confluence/display/KAFKA/kafka+Detailed+Replication+Design+V3 , there are a few cases that we need to update a ZK path conditionally (based on ZK version). We will need to upgrade to the latest version of ZKClient that exposes the version of a ZK path during writes.