ZooKeeper
  1. ZooKeeper
  2. ZOOKEEPER-1855

calls to zoo_set_server() fail to flush outstanding request queue.

    Details

    • Type: Bug Bug
    • Status: Open
    • Priority: Minor Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 3.5.1
    • Component/s: c client
    • Labels:
      None

      Description

      If one calls zoo_set_servers to update with a new server list that does not contain the currently connected server, the client will disconnect. Fair enough, but any outstanding requests on the set_requests queue aren't completed, so the next completed request from the new server can fail with an out-of-order XID error.

      The disconnect occurs in update_addrs(), when a reconfig is necessary, though it's not quite as easy as just calling cleanup_bufs there, because you could then race the call to dequeue_completion in zookeeper_process and pull NULL entries for a recently completed request

      I don't have a patch for this right now, but I do have a simple repro I can post when time permits.

        Activity

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          People

          • Assignee:
            Unassigned
            Reporter:
            Dutch T. Meyer
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            Dates

            • Created:
              Updated:

              Development