synapse/changelog.d/10116.bugfix
Erik Johnston a0cd8ae8cb
Don't try and backfill the same room in parallel. (#10116)
If backfilling is slow then the client may time out and retry, causing
Synapse to start a new `/backfill` before the existing backfill has
finished, duplicating work.
2021-06-04 10:47:58 +01:00

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Fix bug where the server would attempt to fetch the same history in the room from a remote server multiple times in parallel.