synapse/changelog.d/6187.bugfix
Richard van der Hoff a139420a3c
Fix races in room stats (and other) updates. (#6187)
Hopefully this will fix the occasional failures we were seeing in the room directory.

The problem was that events are not necessarily persisted (and `current_state_delta_stream` updated) in the same order as their stream_id. So for instance current_state_delta 9 might be persisted *before* current_state_delta 8. Then, when the room stats saw stream_id 9, it assumed it had done everything up to 9, and never came back to do stream_id 8.

We can solve this easily by only processing up to the stream_id where we know all events have been persisted.
2019-10-10 11:29:01 +01:00

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Fix occasional missed updates in the room and user directories.