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  1. Core Server
  2. SERVER-71219

Migration can miss writes from prepared transactions

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    • Type: Icon: Bug Bug
    • Resolution: Fixed
    • Priority: Icon: Critical - P2 Critical - P2
    • 4.4.19, 5.0.15, 6.3.0-rc0, 6.0.5
    • Affects Version/s: 4.2.0, 4.4.0, 5.0.0, 6.0.0, 6.1.0-rc3
    • Component/s: Sharding
    • None
    • Fully Compatible
    • ALL
    • v6.2, v6.0, v5.0, v4.4
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    • Sharding NYC 2022-11-28, Sharding 2022-12-12, Sharding NYC 2022-12-26, Sharding NYC 2023-01-09, Sharding NYC 2023-01-23, Sharding NYC 2023-02-06
    • 113

      Migration relies on LogTransactionOperationsForShardingHandler to capture writes that gets committed. However, the issue is that the commit handler only gets registered to the recovery unit during prepare. This means that if another node becomes the primary, no callbacks from LogTransactionOperationsForShardingHandler will get called when the transaction gets committed.

            Assignee:
            randolph@mongodb.com Randolph Tan
            Reporter:
            randolph@mongodb.com Randolph Tan
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              Created:
              Updated:
              Resolved: