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Type: Task
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 3.5.13
Affects Version/s: Backlog
Component/s: Replication
Labels:
None

Backwards Compatibility:
Fully Compatible
Sprint:
Repl 2017-08-21, Repl 2017-09-11
Linked BF Score:
0
Confidence Status:
None
Work Order:
3

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

Currently, when we rename across databases, a problem arises with rollback when we are trying to refetch a document in a collection that has been renamed across databases. Even if we are querying by UUID's, because the collection has been copied into another database, this action makes the UUID of the collection to change. Thus, although the document does exist, just under a different namespace and UUID, we will not be able to refetch it during rollback. This leads to data corruption between the sync source and rolling back node.

A fix for this would be to make the oplog entry for renameCollection a set of create, insert and delete oplog entries instead of a singular oplog entry. This means that even if during rollback, we cannot refetch the document by UUID, when the node has transitioned out of roll back state and into secondary state, we can apply the insertions and maintain consistency.

depends on

SERVER-30900 remove collMod writeConcern argument from ReplSetTest.checkReplicaSet()

Closed

SERVER-30908 ReplSetTest.checkOplogs() returns error when the replica set contains an arbiter

Closed

is depended on by

SERVER-30798 Disallow running applyOps with a renameCollection entry that renames across databases

Backlog

SERVER-30381 Remove handing for rolling back dropSource collections

Closed

SERVER-30382 Create new oplog entry for handling cross database renameCollections

Closed

is related to

SERVER-28285 renameCollection should only generate one oplog entry

Closed

SERVER-30948 Add protection against releasing lock manager RAII objects out of order

Closed

SERVER-30212 Use two phase drop for renameCollection drops

Closed

related to

SERVER-30383 Preserve collection UUID in renameCollection across databases

Closed

SERVER-39587 Include the final collection name in each oplog entry for commands using temporary collections

Closed

(3 is related to, 2 related to)

Assignee:: Benety Goh
Reporter:: Allison Chang (Inactive)
Participants:: Allison Chang, Andy Schwerin, Benety Goh, Geert Bosch, Githook User, Spencer Brody
Votes:: 0 Vote for this issue
Watchers:: 7 Start watching this issue

Created:: Jul 27 2017 04:01:54 PM UTC
Updated:: Oct 30 2023 11:14:50 PM UTC
Resolved:: Sep 06 2017 07:55:05 PM UTC

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