anonymousland-synapse/changelog.d/5274.bugfix
Erik Johnston df9d900544 Correctly filter out extremities with soft failed prevs (#5274)
When we receive a soft failed event we, correctly, *do not* update the
forward extremity table with the event. However, if we later receive an
event that references the soft failed event we then need to remove the
soft failed events prev events from the forward extremities table,
otherwise we just build up forward extremities.

Fixes #5269
2019-05-30 16:12:50 +01:00

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Fix bug where we leaked extremities when we soft failed events, leading to performance degradation.