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  1. MariaDB MaxScale
  2. MXS-2311

connection_keepalive and error : (4852) Unexpected internal state: received response 0x00 from server

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.2.19, 2.3.3
    • Fix Version/s: 2.3.4, 2.2.20
    • Component/s: Protocol
    • Labels:
      None
    • Sprint:
      MXS-SPRINT-75

      Description

      We saw the following error logged in MaxScale 2.3.3:

      error : (4852) Unexpected internal state: received response 0x00 from server 'mariadb-server' when no response was expected. Command: 0x03 Query: <not available>

      As I understand it, this should not have any negative side effects, but it seems to indicate a problem with the connection_keepalive ping mechanism.

      A potential work-around/solution to avoid this to set the value of `connection_timeout` to a value close to `wait_timeout` to hopefully reduce the chance of logging these warnings.

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              Assignee:
              markus makela markus makela
              Reporter:
              ccalender Chris Calender
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