synapse/changelog.d/14915.bugfix at e8269ed391a199bbe0e43efc28c68c98b949b323 - mirrors/synapse - Sadium Git

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Patrick Cloke 230a831c73

Attempt to delete more duplicate rows in receipts_linearized table. (#14915 )

The previous assumption was that the stream_id column was unique
(for a room ID, receipt type, user ID tuple), but this turned out to be
incorrect.

Now find the max stream ID, then map this back to a database-specific
row identifier and delete other rows which match the (room ID, receipt type,
user ID) tuple, but *not* the row ID.

2023-02-01 15:45:10 -05:00

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Fix a bug introduced in Synapse 1.70.0 where the background updates to add non-thread unique indexes on receipts could fail when upgrading from 1.67.0 or earlier.