Watch always returns watch_id=0 about etcd3 HOT 2 CLOSED

I figured out that this happens when the sequence is:

• watch
• cancel
• watch
• cancel
• ...
  I saw in the code that the client will close the stream after the cancel and create a new one for the new watch. I assume that the server creates a new object with new indexing.

from etcd3.

Hey, I had the same problem !
All my watchers ids were 0 causing trouble when canceling them.
Maybe it's not the same cause than yours, but in case of here what I did:

• Created an instance of the library
• Based on this instance, created a namespace object
• Based on this namespace, created some watchers
  I was assuming that I used the same "namespace" instance in my all app but in fact I did a little mistake, and the namespace was not a singleton but it was created each time causing the new watchers to have the id "0".

Maybe check if you're not re-creating a new instance of the lib/namespace to be sure all your watchers are linked to the same instance.

Hope it helps
Cheers

from etcd3.