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  1. ZooKeeper
  2. ZOOKEEPER-1910

RemoveWatches wrongly removes the watcher if multiple watches exists on a path

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    Description

      Consider a case where zkclient has added 2 data watchers(say 'w1' and 'w2') on '/node1'.

      Now user has removed w1, but this is deleting the 'CnxnWatcher' in ZK server against the "/node1" path. This will affect other data watchers(if any) of same client on same path. In our case 'w2' would not be notified.

      Note: please see the attached test case to understand more.

      Attachments

        1. ZOOKEEPER-1910.patch
          2 kB
          Rakesh Radhakrishnan
        2. ZOOKEEPER-1910.patch
          27 kB
          Rakesh Radhakrishnan
        3. ZOOKEEPER-1910.patch
          28 kB
          Rakesh Radhakrishnan
        4. ZOOKEEPER-1910.patch
          34 kB
          Rakesh Radhakrishnan

        Issue Links

          causes

          Bug - A problem which impairs or prevents the functions of the product. ZOOKEEPER-4625 No reliable way to remove watcher without interfering others in same watch mode and on same path

          • Major - Major loss of function.
          • Open
          is related to

          Sub-task - The sub-task of the issue ZOOKEEPER-442 need a way to remove watches that are no longer of interest

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. ZOOKEEPER-2586 zoo_aremove_watchers() does not remove a watch of path has more than one watch

          • Major - Major loss of function.
          • Open
          relates to

          Bug - A problem which impairs or prevents the functions of the product. ZOOKEEPER-1919 Update the C implementation of removeWatches to have it match ZOOKEEPER-1910

          • Blocker - Blocks development and/or testing work, production could not run
          • Closed

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              rakeshr Rakesh Radhakrishnan
              rakeshr Rakesh Radhakrishnan
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              Dates

                Created:
                Updated:
                Resolved: