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/session/session_prefetch.c:35: MISSING_LOCK 177376 Accessing "((WT_CONNECTION_IMPL *)((WT_SESSION_IMPL *)session)>iface.connection)>prefetch_queue_count" without holding lock "_wt_spinlock.lock". Elsewhere, "wt_connection_impl.prefetch_queue_count" is written to with "_wt_spinlock.lock" held 3 out of 3 times.