ZooKeeper
  1. ZooKeeper
  2. ZOOKEEPER-662

Too many CLOSE_WAIT socket state on a server

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Duplicate
    • Affects Version/s: 3.2.1
    • Fix Version/s: 3.4.0
    • Component/s: quorum
    • Labels:
      None
    • Environment:

      Linux 2.6.9

    • Tags:
      CLOSE_WAIT, client port

      Description

      I have a zookeeper cluster with 5 servers, zookeeper version 3.2.1, here is the content in the configure file, zoo.cfg

      ======

      1. The number of milliseconds of each tick
        tickTime=2000
      2. The number of ticks that the initial
      3. synchronization phase can take
        initLimit=5
      4. The number of ticks that can pass between
      5. sending a request and getting an acknowledgement
        syncLimit=2
      6. the directory where the snapshot is stored.
        dataDir=./data/
      7. the port at which the clients will connect
        clientPort=8181
      1. zookeeper cluster list
        server.100=10.23.253.43:8887:8888
        server.101=10.23.150.29:8887:8888
        server.102=10.23.247.141:8887:8888
        server.200=10.65.20.68:8887:8888
        server.201=10.65.27.21:8887:8888
        =====

      Before the problem happened, the server.200 was the leader. Yesterday morning, I found the there were many sockets with the state of CLOSE_WAIT on the clientPort (8181), the total was over about 120. Because of these CLOSE_WAIT, the server.200 could not accept more connections from the clients. The only thing I can do under this situation is restart the server.200, at about 2010-02-01 06:06:35. The related log is attached to the issue.

      1. zookeeper.log.2010020105
        352 kB
        Qian Ye
      2. zookeeper.log.2010020106
        199 kB
        Qian Ye

        Activity

        No work has yet been logged on this issue.

          People

          • Assignee:
            Unassigned
            Reporter:
            Qian Ye
          • Votes:
            1 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development