Data race condition

The value of the shared data will be determined by the interleaving of thread execution. Thread shared data is accessed without holding an appropriate lock, possibly causing a race condition
/src/mongo/db/s/resharding/resharding_coordinator_observer.cpp:230: MISSING_LOCK 150121 Accessing "this->_allRecipientsDone" without holding lock "mongo::ReshardingCoordinatorObserver._mutex". Elsewhere, "mongo::ReshardingCoordinatorObserver._allRecipientsDone" is written to with "ReshardingCoordinatorObserver._mutex" held 3 out of 3 times.