[SERVER-20707] Add a new option --enableMajorityReadConcern Created: 30/Sep/15  Updated: 17/May/19  Resolved: 08/Oct/15

Status: Closed
Project: Core Server
Component/s: Replication, Storage
Affects Version/s: None
Fix Version/s: 3.2.0-rc0

Type: Improvement Priority: Major - P3
Reporter: Mathias Stearn Assignee: Mathias Stearn
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Documented
is documented by DOCS-9527 Docs for SERVER-20707: Add a new opti... Closed
Related
related to SERVER-20825 Only start snapshot thread when major... Closed
is related to SERVER-22617 SnapshotThread hits invariant due to ... Closed
Backwards Compatibility: Fully Compatible
Sprint: QuInt A (10/12/15)
Participants:

 Description   

Plan:

Add a new option --enableMajorityReadConcern. It will be enabled by default on CSRS nodes. When enabled, we will fail to start up if the selected storage engine doesn't support snapshots. When disabled, requests with readMajority=majority will fail with a dedicated error.

At some point during the RCs before GA release, we will disable the snapshot thread if --enableMajorityReadConcern is not specified (SERVER-20825). Until then, we will leave the thread enabled by default until then to allow more burn-in time across more workloads.



 Comments   
Comment by Githook User [ 08/Oct/15 ]

Author:

{u'username': u'RedBeard0531', u'name': u'Mathias Stearn', u'email': u'mathias@10gen.com'}

Message: SERVER-20707 fix compile on clang
Branch: master
https://github.com/mongodb/mongo/commit/bba9860a221db1e43e71d547f6d5043d180f837b

Comment by Githook User [ 08/Oct/15 ]

Author:

{u'username': u'RedBeard0531', u'name': u'Mathias Stearn', u'email': u'mathias@10gen.com'}

Message: SERVER-20707 Add --enableMajorityReadConcern option
Branch: master
https://github.com/mongodb/mongo/commit/5be08a11886329994ee73950f031c2ee3b4c9309

Comment by Mathias Stearn [ 05/Oct/15 ]

Removed 'level' from option name.

Comment by Andy Schwerin [ 01/Oct/15 ]

I don't think the word "level" adds any value. I believe that "majority read concern" is sufficiently descriptive.

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