[DOCS-11002] Make oplog queries with point equality on ts field use getOplogStartHack (SERVER-29843) Created: 09/Nov/17  Updated: 29/Oct/23  Resolved: 23/Jan/18

Status: Closed
Project: Documentation
Component/s: manual, Server
Affects Version/s: None
Fix Version/s: 3.6.0-rc4

Type: Task Priority: Major - P3
Reporter: Kay Kim (Inactive) Assignee: Andrew Aldridge
Resolution: Fixed Votes: 0
Labels: oplog
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Documented
documents SERVER-29843 Make oplog queries with point equalit... Closed
Participants:
Days since reply: 6 years, 3 weeks, 1 day ago
Epic Link: DOCS: 3.6 Server
Story Points: 0.5

 Description   

Documentation Request Summary:

No documentation summary in engineering ticket

Engineering Ticket Description:

Doing point queries on the ts field is slow in the oplog because the oplog does not have any indexes. WT has a hack that allows it to do binary search on the ts field but is only enabled when the query predicate has top level $gt/$gte.

This is needed by retryable writes in order to do fast lookup on oplog entries when traversing through the write history within a transaction.



 Comments   
Comment by Githook User [ 23/Jan/18 ]

Author:

{'username': 'i80and', 'email': 'i80and@foxquill.com', 'name': 'Andrew Aldridge'}

Message: DOCS-11002: support $eq with oplogReplay
Branch: master
https://github.com/mongodb/docs/commit/745afa9c78ccf09eff90266ac12283bf46db41eb

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