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  1. MariaDB MaxScale
  2. MXS-3617

writeq throttling can lose response packets

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.5.13
    • Fix Version/s: 2.5.14
    • Component/s: Core
    • Labels:
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      Description

      If the client sends very large amounts of data and the backend writeq_high_water is hit, the client is removed from epoll until the backend buffers fall under writeq_low_water. During this time if a backend sends a response, it is discarded by the backend protocol code. This can manifest itself as a hang during large batch uploads using the MariaDB JDBC or Nodejs connectors.

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            Assignee:
            markus makela markus makela
            Reporter:
            markus makela markus makela
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