Description

We want to enable MCR in forward-compatible mode for use in CI and on development systems.

The new default should be:
$wgMultiContentRevisionSchemaMigrationStage = SCHEMA_COMPAT_WRITE_BOTH | SCHEMA_COMPAT_READ_OLD;

NOTE: this is tracked as an MCR Deployment task because it blocks schema deployment. It's not itself a deployment task.

NOTE: this should NOT be release. 1.32 should instead have "write both, read new" as the default, see T198561

Details

	Subject	Repo	Branch	Lines +/-
	[MCR] [DNM] Set MCR migration stage to write-both/read-old.	mediawiki/core	master	+1 -1
	Set default wgMultiContentRevisionSchemaMigrationStage to write-both	mediawiki/core	master	+1 -1

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Status	Assigned	Task
		· · ·
Resolved	daniel	T198561 Make "write both, read new" the default MCR migration stage for fresh MediaWiki installs / for CI
Resolved	Anomie	T198563 Make "write both, read old" the default MCR migration stage on master / for CI
		· · ·

Event Timeline

daniel triaged this task as Medium priority.Jul 1 2018, 12:53 PM

daniel created this task.

daniel edited projects, added Multi-Content-Revisions (Deployment); removed Multi-Content-Revisions (MCR-SDC File Caption Support - phase 2).Jul 4 2018, 12:12 PM

daniel updated the task description. (Show Details)Jul 4 2018, 12:29 PM

Aklapper changed the edit policy from "Custom Policy" to "All Users".Jul 9 2018, 7:40 AM

CCicalese_WMF moved this task from Backlog to Ready on the Multi-Content-Revisions (Deployment) board.Jul 13 2018, 4:36 PM

Change 446065 had a related patch set uploaded (by Anomie; owner: Anomie):
[mediawiki/core@master] Set default wgMultiContentRevisionSchemaMigrationStage to write-both

https://gerrit.wikimedia.org/r/446065

gerritbot added a project: Patch-For-Review.Jul 16 2018, 5:16 PM

Change 446065 merged by jenkins-bot:
[mediawiki/core@master] Set default wgMultiContentRevisionSchemaMigrationStage to write-both

https://gerrit.wikimedia.org/r/446065

ReleaseTaggerBot added a project: MW-1.32-notes (WMF-deploy-2018-07-24 (1.32.0-wmf.14)).Jul 19 2018, 5:00 PM

Anomie closed this task as Resolved.Jul 19 2018, 5:45 PM

Anomie claimed this task.

Anomie added a project: Core-Platform-Team-Old (CPT-Q1-Jul-Sep-2018).

Anomie moved this task from Backlog to Closed on the Core-Platform-Team-Old (CPT-Q1-Jul-Sep-2018) board.

CCicalese_WMF moved this task from Ready to Done on the Multi-Content-Revisions (Deployment) board.Jul 27 2018, 10:23 PM

Change 425519 abandoned by Daniel Kinzler:
[MCR] [DNM] Set MCR migration stage to write-both/read-old.

https://gerrit.wikimedia.org/r/425519