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  1. Couchbase Server
  2. MB-8199

[Doc'd] many concurrent view requests cause excessive resource consumption and even crash

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 2.0.1, 2.1.0
    • Fix Version/s: 2.2.0
    • Component/s: ns_server
    • Security Level: Public
    • Labels:
    • Environment:
      4-core CPU, 16GB RAM, Linux
    • Operating System:
      Centos 64-bit

      Description

      In response to many view requests against the scatter/gather view merger, a node can allocate so many resources that it will fail to recover.

      In one case, this did cause many timeouts in the log leading to max_restart_intensity:
      [error_logger:error,2013-04-25T15:23:26.047,ns_1@10.128.16.171:error_logger<0.6.0>:ale_error_logger_handler:log_report:72]
      =========================SUPERVISOR REPORT=========================
      Supervisor:

      {local,ns_node_disco_sup}


      Context: shutdown
      Reason: reached_max_restart_intensity
      Offender: [

      {pid,<0.17237.774>}

      ,

      {name,ns_config_rep}

      ,
      {mfargs,{ns_config_rep,start_link,[]}},

      {restart_type,permanent}

      ,

      {shutdown,1000}

      ,

      {child_type,worker}

      ]

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        Activity

          People

          • Assignee:
            kzeller kzeller
            Reporter:
            ingenthr Matt Ingenthron
          • Votes:
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            Dates

            • Created:
              Updated:
              Resolved:

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