if (thd_sql_command(user_thd) == SQLCOM_INSERT
		    || thd_sql_command(user_thd) == SQLCOM_REPLACE) {
			dict_table_t*	ib_table = prebuilt->table;

			/* Acquire the AUTOINC mutex. */
			dict_table_autoinc_lock(ib_table);

			/* We need to check that another transaction isn't
			already holding the AUTOINC lock on the table. */
			if (ib_table->n_waiting_or_granted_auto_inc_locks) {
				/* Release the mutex to avoid deadlocks. */
				dict_table_autoinc_unlock(ib_table);
			} else {
				fprintf(stderr, "fallback ha_innodb.cc\n");
				break; // This happens on MASTER
			}
		}