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  1. ZooKeeper
  2. ZOOKEEPER-1909

removeWatches doesn't return NOWATCHER when there is no watch set


    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.5.0
    • Fix Version/s: 3.5.0
    • Component/s: server
    • Labels:


      ZOOKEEPER-442 introduced support for a new opcode: removeWatches. The way it was implemented though, implies that you need to check on the client side if a watch/watcher is set before you send your request to the server. If you don't, ZK will just swallow your request and won't return an error code if there isn't a watch set for that path.

      I noticed this whilst implementing removeWatches for Kazoo [1]. As mentioned, I guess it could be expected that clients should do the check on their side but I think that the correct thing would to have the server do the validation and return the error code accordingly as well.

      Rakesh R, Patrick Hunt: thoughts?

      [1] https://github.com/rgs1/kazoo/commit/44ca48e975aeea3fd0664fe13136a72caf89e54f


        1. ZOOKEEPER-1909.patch
          10 kB
          Raul Gutierrez Segales
        2. ZOOKEEPER-1909.patch
          10 kB
          Raul Gutierrez Segales
        3. ZOOKEEPER-1909.patch
          10 kB
          Raul Gutierrez Segales
        4. ZOOKEEPER-1909.patch
          4 kB
          Raul Gutierrez Segales



            • Assignee:
              rgs Raul Gutierrez Segales
              rgs Raul Gutierrez Segales
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