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Type:
Task
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: Transactions
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Security Level: Public (Available to anyone on the web)
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Storage Engines - Transactions
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2,808.277
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SE Transactions - 2026-04-24
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8
A prepared transaction is an uncommitted transaction. Currently, we don't allow an uncommitted transaction to survive the step-up. However, this means on step-up, MongoDB needs to rollback all the prepared transactions before step-up and then replay them later. This will prolong the step-up time.
Investigate how WT can allow the prepared transaction to survive step-up. It is non-trivial because during the step-up, we need to modify the transaction data structure of the prepared transactions which is owned by another session.