Commit Graph

1 Commits

Author SHA1 Message Date
Sean Quah
c675a18071
Track ongoing event fetches correctly (again) (#11376)
The previous fix for the ongoing event fetches counter
(8eec25a1d9) was both insufficient and
incorrect.

When the database is unreachable, `_do_fetch` never gets run and so
`_event_fetch_ongoing` is never decremented.

The previous fix also moved the `_event_fetch_ongoing` decrement outside
of the `_event_fetch_lock` which allowed race conditions to corrupt the
counter.
2021-11-26 13:47:24 +00:00