定时任务执行优化，没有测试，可能存在问题

mec-biz/src/main/java/com/ym/mec/biz/service/impl/IndexBaseMonthDataServiceImpl.java

@@ -36,9 +36,7 @@ import java.time.DayOfWeek;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.util.*;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.*;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -72,7 +70,12 @@ public class IndexBaseMonthDataServiceImpl extends BaseServiceImpl<Long, IndexBa
 	private SysEmployeePositionService employeePositionService;
 	@Autowired
 	private MusicGroupCalenderRefundPeriodDao musicGroupCalenderRefundPeriodDao;
-	private static final ExecutorService exportExecutorService = Executors.newFixedThreadPool(20);
+	private static final ExecutorService exportExecutorService = new ThreadPoolExecutor(
+			20, 20, 0L, TimeUnit.MILLISECONDS,
+			new LinkedBlockingQueue<>(),
+			Executors.defaultThreadFactory(),
+			new ThreadPoolExecutor.CallerRunsPolicy()
+	);;
 	private static final Logger businessLogger = LoggerFactory.getLogger(IndexBaseMonthDataServiceImpl.class);
 
 	private static ThreadLocal<Set<Integer>> organIds = new ThreadLocal<Set<Integer>>(){