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
/data/mci/261f65657bd114359a8e3a064d6e450e/bazel_cache/54c751a1c930d7b7fb2afe7fb4a68167/execroot/_main/src/mongo/db/query/cost_model/cost_model_manager.cpp:124: MISSING_LOCK 148068 Accessing "this->_coefficients" without holding lock "mongo::cost_model::CostModelManager._mutex". Elsewhere, "mongo::cost_model::CostModelManager._coefficients" is written to with "CostModelManager._mutex" held 1 out of 1 times (1 of these accesses strongly imply that it is necessary).