Details
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Task
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Status: Closed
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Major - P3
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Resolution: Fixed
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None
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Fully Compatible
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Sharding 2018-07-30, Sharding 2018-08-13
Description
If the first statement in a transaction does not specify snapshot readConcern, mongod will implicitly upconvert it to snapshot. Mongos currently does not have this behavior, and because many core/txns tests rely on this, either mongos will need to upconvert readConcerns to snapshot as well (until we support transactions with other readConcern levels) or the tests need to be updated to explicitly choose snapshot readConcern.
Attachments
Issue Links
- is documented by
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DOCS-11944 Docs for SERVER-36240: Make transactions on mongos use snapshot level readConcern if no level was provided
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- Closed
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- is related to
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SERVER-35709 mongos should remember readConcern setting for multi statement transaction
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- Closed
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