DOCS-5324: quorum reads with findAndModify() #2518
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Rather than issuing a getLastError, you can use a write concern of ``majority`` to ensure that findAndModify reads only data that cannot be rolled back.
This explicitly details the reasons why one would require a "quorum read" over the existing majority and local read concerns. It also adds a note warning that this procedure is much more expensive than a regular read. This commit also fixes some grammar and explicitly mentions that this technique is new in MongoDB 3.2.
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#2518) * DOCSP-27277 - EOL Reference Cleanup for Database Commands (#2327) (#2515) * DOCSP-27277 - EOL Reference Cleanup for Database Commands (#2327) * DOCSP-27277 EOL version reference cleanup for Database Commands * Refactors version references to use directive * Version cleanup createIndexes and serverStatus * EOL version cleanup for currentOp * EOL version cleanup for currentOp * EOL version cleanup for listDatabases * EOL version cleanup for listDatabases * EOL version cleanup for listCollections * EOL version cleanup for listCollections * EOL version cleanup for usersInfo * EOL reference fixes for dbHash and updateUser * EOL reference fixes for killOp replSetSyncFrom * Fixes per Kyle Suarez * Fixes per Kyle Suarez. Co-authored-by: Kyle Suarez <[email protected]> --------- Co-authored-by: Kyle Suarez <[email protected]> * Reverts text to fix build errors * Fixes indentation from cherry-pick --------- Co-authored-by: Kyle Suarez <[email protected]> * Fixes build error --------- Co-authored-by: Kyle Suarez <[email protected]>
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Details the process of performing quorum or linearlizable reads via the
findAndModifycommand. The data read is guaranteed to be both durable and fresh if directed at the primary of a replica set.