DRIVERS-3274 Send afterClusterTime on writes in causally-consistent sessions.#1930
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matthewdale wants to merge 11 commits intomongodb:masterfrom
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DRIVERS-3274 Send afterClusterTime on writes in causally-consistent sessions.#1930matthewdale wants to merge 11 commits intomongodb:masterfrom
matthewdale wants to merge 11 commits intomongodb:masterfrom
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sanych-sun
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May 4, 2026
| `operationTime` in the `ClientSession` whether the operation succeeded or not. | ||
| 2. Passing that `operationTime` in the `afterClusterTime` field of the `readConcern` field for subsequent causally | ||
| consistent read operations (for all commands that support a `readConcern`) | ||
| consistent read and write operations (for all commands that support a `readConcern`) |
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Should we specify list of commands here to avoid any confusion?
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Yes, I'll update the list in "Read Write Concern", which "Causal Consistency" links to.
…kWrite to the description of write commands.
matthewdale
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@sanych-sun Could you link the C# implementation draft / CI for tests? |
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sanych-sun
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May 6, 2026
…ns test assertions.
matthewdale
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Here's the Go Driver proof-of-concept implementation: mongodb/mongo-go-driver#2380 |
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DRIVERS-3274
Update the Causal Consistency spec to require that
afterClusterTimeis sent on write commands in causally-consistent sessions. Write commands that should sendafterClusterTimeare:insertupdatefindAndModifydeletebulkWritecreatecreateIndexesdropdropDatabasedropIndexesPreviously,
afterClusterTimewas only sent on read commands and the first command in a transaction.Changes:
readConcernreadConcern.Please complete the following before merging:
clusters).