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Type: Bug
Resolution: Duplicate
Priority: Major - P3
Fix Version/s: None
Affects Version/s: None
Component/s: Replication
Labels:
- prepare_errors

Operating System:
ALL
Sprint:
Repl 2019-05-06
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

The following deadlock can occur:
1) A transaction goes in prepare in oplog application
2) A user operation acquires a lock in mode S and then blocks on a prepare conflict with the prepared transaction.
3) The commit of the prepared transaction attempts to reacquire (since the lock was yielded) an IX lock that conflicts with the mode S lock and blocks.

Possible solutions:
1) Do not yield locks for prepared transactions on secondaries.
2) Say such a user operation is illegal. We do not think they can occur today.
3) Yield locks in prepare conflicts

is related to

SERVER-39096 Prepared transactions and DDL operations can deadlock on a secondary, if a reader blocks on a prepared document

Closed

SERVER-39372 Make secondary lock acquisition for DDL operations consistent with behavior on primary

Closed

SERVER-40705 Stepdown with prepared transaction that performed text search triggers invariant

Closed

SERVER-37199 Yield locks of transactions in secondary application

Closed

SERVER-38588 Hybrid index builds do not work when applied concurrently with prepared transactions on secondaries

Closed

SERVER-37988 recover locks on step up at the beginning of the state transition rather than at the end

Closed

related to

SERVER-41888 Shutting down with prepared transaction can invariant during collection validation

Closed

SERVER-103744 Deadlock between renameCollection, dbHash, and prepared transaction

Closed

split to

SERVER-40936 add an invariant that we do not get a prepare conflict while holding a global, database, or collection MODE_S lock

Closed

SERVER-40937 remove the secondary DB lock acquisition for multikey updates

Closed

SERVER-40938 Add tests that dbhash and map-reduce do not accept a read concern

Closed

(1 is related to, 2 related to, 3 split to)

Assignee:: Judah Schvimer
Reporter:: Judah Schvimer
Participants:: Judah Schvimer
Votes:: 0 Vote for this issue
Watchers:: 7 Start watching this issue

Created:: Apr 18 2019 09:06:05 PM UTC
Updated:: May 06 2025 04:22:11 PM UTC
Resolved:: May 01 2019 07:07:48 PM UTC

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