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Type: Task
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 6.3.0-rc0
Affects Version/s: None
Component/s: None
Labels:
None

Assigned Teams:

Storage Execution
Backwards Compatibility:
Fully Compatible
Sprint:
Execution Team 2023-02-20, Execution Team 2023-02-06
Linked BF Score:
169
Confidence Status:
None
Work Order:
3

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

Upgrading the global lock mode without first releasing the lock held can have bad side effects (namely deadlock and resource exhaustion). We've removed some cases where this can happen (most recently in ~~SERVER-59219~~). We think we can explicitly ban this behavior in code, as it could help us identify additional bugs we haven't hit yet, and avoid future ones. That said, there are some instances where we currently upgrade the global lock, and we'll need to fix these first.

depends on

SERVER-61601 Determine if global lock upgrade is necessary when implicitly creating collection during createIndexes

Closed

SERVER-61609 Determine if global lock upgrade is necessary in ReplicationCoordinatorExternalStateImpl::_dropAllTempCollections

Closed

SERVER-61733 Determine if global lock upgrade is necessary in transaction_participant.cpp:fetchActiveTransactionHistory

Closed

SERVER-61786 Determine if we can avoid global lock upgrade in IndexBuildsCoordinatorMongod::setCommitQuorum

Closed

SERVER-61788 Determine if we can avoid global lock upgrade in dbtest StorageTimestampTest

Closed

SERVER-61789 Determine if we can avoid global lock upgrade in dbtests/repltests.cpp

Closed

SERVER-66609 Avoid global lock upgrade in storage_timestamp_test.cpp

Closed

SERVER-67695 Remove the write-blocking mode of dbCheck

Closed

is depended on by

SERVER-73040 Ban all lock upgrades

Closed

is related to

SERVER-66145 Identify and fix locations that write while holding read tickets

Closed

SERVER-66719 dbCheck FCV lock upgrade causes deadlock with setFCV

Closed

(3 depends on, 1 is depended on by, 2 is related to)

Assignee:: Fausto Leyva (Inactive)

Reporter:: Dan Larkin-York

Participants:: Dan Larkin-York, Fausto Leyva, Githook User, Louis Williams

Votes:: 0 Vote for this issue

Watchers:: 10 Start watching this issue

Created:: Oct 12 2021 02:55:02 PM UTC

Updated:: Oct 29 2023 09:47:31 PM UTC

Resolved:: Feb 03 2023 07:19:59 PM UTC

Confidence Status Last Update:: 12/Jan/23 3:40 PM

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