https://bugzilla.wikimedia.org/show_bug.cgi?id=55844

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            Bug ID: 55844
           Summary: Add a new field, rc_source, to the recentchanges table
           Product: Wikimedia
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: Unprioritized
         Component: General/Unknown
          Assignee: [email protected]
          Reporter: [email protected]
    Classification: Unclassified
   Mobile Platform: ---

Short description:

Add a new field which will be replacing rc_type to allow various sources of
recentchanges rows to identify themselves without requiring registration for a
numeric constant. 

We will not be migrating any existing data into this field, rather we will let
it run for a month with the linked patch until the time based pruning of
recentchanges deletes all rows that do not have the new field populated.

Which wikis are affected:

all

Which tables:

recentchanges

What is the change to those tables:

ALTER TABLE recentchanges ADD rc_source VARBINARY(16) NULL DEFAULT
NULL;

Links to gerrit changes and/or other related bug reports.

https://gerrit.wikimedia.org/r/#/c/85787/
- This change is accepted from an engineering fstandpoint, now ready for
production db to be updated.

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