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  1. Hadoop Common
  2. HADOOP-16504

Increase ipc.server.listen.queue.size default from 128 to 256

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.3.0
    • Component/s: None
    • Labels:
      None

      Description

      Because ipc.server.listen.queue.size default value is too small, TCP's ListenDrop indicator along with the rpc request large.
      The upper limit of the system's semi-join queue is 65636 and maximum number of fully connected queues is 1024.

      [work@c3-hadoop-srv-talos27 ~]$ cat /proc/sys/net/ipv4/tcp_max_syn_backlog
      65536
      [work@c3-hadoop-srv-talos27 ~]$ cat /proc/sys/net/core/somaxconn
      1024
      

      I think this default value should be adjusted.

        Attachments

        1. HADOOP-16504.000.patch
          1 kB
          Lisheng Sun
        2. HADOOP-16504.001.patch
          2 kB
          Lisheng Sun

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              • Assignee:
                leosun08 Lisheng Sun
                Reporter:
                leosun08 Lisheng Sun
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                • Created:
                  Updated:
                  Resolved: