[ZOOKEEPER-553] C client's zoo_state function returns unknown state 0

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.2.1
• Component/s: c client, contrib-bindings
• Assignee: Unassigned
• Reporter: Steven K. Wong
• Created: 14/Oct/09 00:47
• Updated: 03/Feb/22 08:50

Description

Using zkpython with ZK 3.2.1 release:

import zookeeper as z
zh = z.init(...)
z.state(zh) # returns 3 == z.CONNECTED_STATE

1. kill standalone ZK server
   z.state(zh) # returns 0 == ???

The problem is that 0 is not a state defined by the C client's zookeeper.[ch]. Perhaps 0 should've been defined as something like DISCONNECTED_STATE? (Java's KeeperState.Disconnected is 0, if that matters.)

If the fix is to define 0 as a new state, changes will be needed to both the C client and zkpython. Not sure about other bindings.