synapse/changelog.d/14723.bugfix at 331797586e53203a63a05cefecbbb1c8deb25d63 - mirrors/synapse - Sadium Git

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Nick Mills-Barrett db1cfe9c80

Update all stream IDs after processing replication rows (#14723 )

This creates a new store method, `process_replication_position` that
is called after `process_replication_rows`. By moving stream ID advances
here this guarantees any relevant cache invalidations will have been
applied before the stream is advanced.

This avoids race conditions where Python switches between threads mid
way through processing the `process_replication_rows` method where stream
IDs may be advanced before caches are invalidated due to class resolution
ordering.

See this comment/issue for further discussion:
	https://github.com/matrix-org/synapse/issues/14158#issuecomment-1344048703

2023-01-04 11:49:26 +00:00

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Ensure stream IDs are always updated after caches get invalidated with workers. Contributed by Nick @ Beeper (@fizzadar).