mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
In case syncWatchersLoop() starts before Restore() is called, watchers already added by that moment are moved to s.synced by the loop. However, there is a broken logic that moves watchers from s.synced to s.uncyned without setting keyWatchers of the watcherGroup. Eventually syncWatchers() fails to pickup those watchers from s.unsynced and no events are sent to the watchers, because newWatcherBatch() called in the function uses wg.watcherSetByKey() internally that requires a proper keyWatchers value.