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Type: Task
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 4.3.1
Affects Version/s: None
Component/s: Replication
Labels:
None

Backwards Compatibility:
Fully Compatible
Sprint:
Repl 2019-07-15, Repl 2019-08-26
Confidence Status:
None
Work Order:
3
CAR Domain/s:
None

Aha! Reference:
None
Tracking Level:
None
Risk Status:
None
Exec Notes:
None
Goal Name(s):
None
Goal Link:
None

We currently think this was only necessary for mmapv1 when updates could cause a collection scan to miss a document. If we could remove this step, it could significantly speed up initial sync in certain workloads and simplify initial sync.

This would require the storage engine API to prohibit updates from causing collection scans to miss a document.

is depended on by

SERVER-26780 SyncTail::getMissingDoc() should retry on SocketExceptions

Closed

is related to

SERVER-21057 Collection scan during concurrent move-update can return invalid results, trip fatal assertion (mmapv1 only)

Closed

related to

SERVER-15410 Batch fetch missing documents during initial sync, with retries

Closed

Assignee:: A. Jesse Jiryu Davis
Reporter:: Judah Schvimer
Participants:: A. Jesse Jiryu Davis, David Golden, Githook User, Judah Schvimer, Will Schultz
Votes:: 0 Vote for this issue
Watchers:: 16 Start watching this issue

Created:: Jul 01 2019 01:33:31 PM UTC
Updated:: Oct 29 2023 10:19:24 PM UTC
Resolved:: Aug 21 2019 04:15:54 PM UTC
Confidence Status Last Update:: 12/Aug/19 7:46 PM

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