[Wikidata-bugs] [Maniphest] [Created] T138381: Allow DB group used by ChangeDispatcher to be configured

Wed, 22 Jun 2016 03:39:32 -0700

daniel created this task.
daniel added projects: Wikidata, MediaWiki-extensions-WikibaseRepository.
Herald added a subscriber: Aklapper.

TASK DESCRIPTION

To avoid hitting web-facing database servers with long running queries, ChangeDispatcher should use a configurable DB server group. To do this, we need to:

  1. move ConsistentReadConnectionManager to lib (or to core)
  2. allow the DB server group(s) to be set in ConsistentReadConnectionManager's constructor
  3. make EntityChangeLookup and SqlChangeDispatchCoordinator use ConsistentReadConnectionManager
  4. allow the DB server group to use for the ConsistentReadConnectionManager used by ChangeDispatcher to be defined from the command line.
  5. add a command line argument to dispatchChanges.php for specifying the DB server group.

TASK DETAIL
https://phabricator.wikimedia.org/T138381

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To: daniel
Cc: Aklapper, Zppix, jcrespo, ArielGlenn, hoo, daniel, D3r1ck01, Izno, Wikidata-bugs, aude, Mbch331
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