[Wikidata-bugs] [Maniphest] [Retitled] T198561: Make "write both, read new" the default MCR migration stage for fresh MediaWiki installs / for CI

[daniel]

daniel renamed this task from "Make "write both, read new" the default MCR migration stage for fresh MediaWiki installs" to "Make "write both, read new" the default MCR migration stage for fresh MediaWiki installs / for CI". daniel updated the task description. (Show Details)

CHANGES TO TASK DESCRIPTION

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With this setting enabled, update.php should convert to the new schema, if that did not previously happen. If update.php detects $wgMultiContentRevisionSchemaMigrationStage = SCHEMA_COMPAT_WRITE_BOTH | SCHEMA_COMPAT_READ_OLD; it should also perform the conversion, if still needed, and issue a warning that $wgMultiContentRevisionSchemaMigrationStage should be changed to ensure forward-compatibility with the next release. If update.php encounters $wgMultiContentRevisionSchemaMigrationStage = SCHEMA_COMPAT_OLD, it should warn that the setting should be changed and update.php should be re-run after that change.

NOTE: we'll want to have this enabled on the live systems for a while before releasing it as the default, see T198308

NOTE: $wgMultiContentRevisionSchemaMigrationStage will only have a pre-existing value on wikis that were installed off a snapshot or master, since $wgMultiContentRevisionSchemaMigrationStage did not exist in 1.31.

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TASK DETAIL

https://phabricator.wikimedia.org/T198561

EMAIL PREFERENCES

https://phabricator.wikimedia.org/settings/panel/emailpreferences/

To: daniel
Cc: greg, Aklapper, CCicalese_WMF, Fjalapeno, daniel, Lahi, Gq86, GoranSMilovanovic, QZanden, LawExplorer, JJMC89, Agabi10, Wikidata-bugs, aude, Mbch331, Ltrlg

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