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  1. Core Server
  2. SERVER-71145

Allow observed all_durable to move backward

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Details

    • Icon: Improvement Improvement
    • Resolution: Fixed
    • Icon: Major - P3 Major - P3
    • 6.2.0-rc0
    • None
    • None
    • None
    • Fully Compatible
    • Execution Team 2022-11-14
    • 5

    Description

      The all_durable timestamp is maintained by the storage engine and may move backward. In the MongoDB integration with WT, we keep track of the highest seen all_durable and use that instead if the all_durable returned from WT is lower. This behavior was previously necessary due to ghost timestamps. Now with ghost timestamps having given up the ghost, we should be able to remove this and simply always return the all_durable that WT reports.

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            gregory.noma@mongodb.com Gregory Noma
            gregory.noma@mongodb.com Gregory Noma
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