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authorErik Johnston <erik@matrix.org>2019-09-17 12:41:23 +0100
committerRichard van der Hoff <1389908+richvdh@users.noreply.github.com>2019-09-17 12:41:23 +0100
commit70c52821ce9e755e4a5c3081510fb1260f609ee3 (patch)
treef098b059c878489034026b568d3a945d27b384ab /docs/log_contexts.md
parentAdd 'failure_ts' column to 'destinations' table (#6016) (diff)
downloadsynapse-70c52821ce9e755e4a5c3081510fb1260f609ee3.tar.xz
Fix race condition in room stats. (#6029)
Broke in #5971

Basically the bug is that if get_current_state_deltas returns no new updates and we then take the max pos, its possible that we miss an update that happens in between the two calls. (e.g. get_current_state_deltas looks up to stream pos 5, then an event persists and so getting the max stream pos returns 6, meaning that next time we check for things with a stream pos bigger than 6)
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