[ZOOKEEPER-1726] No way to dynamically go from 1 ZK server -> 2 ZK servers?

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 3.5.0
• Assignee: Unassigned
• Reporter: Justin SB
• Created: 13/Jul/13 00:45
• Updated: 13/Jul/13 00:53
• Resolved: 13/Jul/13 00:53

Description

The dynamic reconfiguration feature is great. But it doesn't seem to be possible to go from 1 server to 2 servers (1 server + 1 observer). When there's only one server, ZK automatically starts in single server mode; when in single server mode trying to add a server causes a class cast exception because the server is a ZooKeeperServer, not a LeaderZooKeeperServer.