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  1. Core Server
  2. SERVER-32590

RTT 3.6<->4.0 upgrade/downgrade.

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    • Fully Compatible
    • Repl 2018-02-12, Repl 2018-03-12, Repl 2018-03-26, Repl 2018-04-09, Storage NYC 2018-05-21

    Description

      On clean shutdown when in FCV 3.6 a 4.0 binary must:

      • Set the WT "recovery timestamp" to 0
      • Take an unstable checkpoint
      • Enable WT logging for all tables

      Additionally, a 4.0 binary running in FCV 3.6 should persist some state such that a 3.6 binary cannot startup on the datafiles following a crash.

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              daniel.gottlieb@mongodb.com Daniel Gottlieb
              daniel.gottlieb@mongodb.com Daniel Gottlieb
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