WorkerServer refactor (#2106)

* 1, master persistent task
2. extract  master and worker communication model

* 1, master persistent task
2. extract  master and worker communication model

* 1, master persistent task
2. extract  master and worker communication model

* add license

* modify javadoc error

* TaskExecutionContext create modify

* buildAckCommand taskInstanceId not set modify

* java doc error modify

* add comment

* ExecutorManager interface add generic type

* add TaskInstanceCacheManager receive Worker report result

* TaskInstance setExecutePath

* add TaskInstanceCacheManager to receive Worker Task result report

* TaskInstanceCacheManager add remove method

* add license

* add dispatcht task method

* AbstractCommandExecutor remove db access

* AbstractCommandExecutor remove db access

* AbstractCommandExecutor remove db access

* AbstractCommandExecutor remove db access

* AbstractCommandExecutor remove db access

* AbstractCommandExecutor remove db access

* AbstractCommandExecutor remove db access

* taskInstanceCache is null ,need load from db

* taskInstanceCache is null ,need load from db

* taskInstanceCache is null ,need load from db

* 1，worker TaskPros use TaskExecutionContext replase
2，Master kill Task , KillTaskProcessor modify

* worker remove db

* ShellTask modify

* master persistence processId and appIds

* master persistence processId and appIds

* master add kill task logic

* master add kill task logic

* master add kill task logic

* javadoc error modify

* remove chinese log

* executeDirectly method add Override

* remote module modify

* TaskKillResponseProcessor command type modify

* create buildKillCommand

* host add host:port format

* host add host:port format

* TaskAckProcessor modify

* TaskAckProcessor modify

* task prioriry refator

* remove ITaskQueue

* task prioriry refator

* remove ITaskQueue

* TaskPriority refactor

* remove logs

* WorkerServer refactor

Co-authored-by: qiaozhanwei <qiaozhanwei@analysys.com.cn>

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/WorkerServer.java

@@ -52,16 +52,6 @@ public class WorkerServer {
     private static final Logger logger = LoggerFactory.getLogger(WorkerServer.class);
 
 
-    /**
-     *  fetch task executor service
-     */
-    private ExecutorService fetchTaskExecutorService;
-
-    /**
-     * CountDownLatch latch
-     */
-    private CountDownLatch latch;
-
     /**
      *  worker config
      */
@@ -120,9 +110,6 @@ public class WorkerServer {
         this.workerRegistry = new WorkerRegistry(zookeeperRegistryCenter, serverConfig.getListenPort(), workerConfig.getWorkerHeartbeatInterval(), workerConfig.getWorkerGroup());
         this.workerRegistry.registry();
 
-
-        this.fetchTaskExecutorService = ThreadUtils.newDaemonSingleThreadExecutor("Worker-Fetch-Thread-Executor");
-
         /**
          * register hooks, which are called before the process exits
          */
@@ -132,13 +119,6 @@ public class WorkerServer {
                 close("shutdownHook");
             }
         }));
-
-        //let the main thread await
-        latch = new CountDownLatch(1);
-        try {
-            latch.await();
-        } catch (InterruptedException ignore) {
-        }
     }
 
     public void close(String cause) {
@@ -169,19 +149,6 @@ public class WorkerServer {
             }catch (Exception e){
                 logger.warn("threadPool service stopped exception:{}",e.getMessage());
             }
-
-            logger.info("threadPool service stopped");
-
-            try {
-                fetchTaskExecutorService.shutdownNow();
-            }catch (Exception e){
-                logger.warn("worker fetch task service stopped exception:{}",e.getMessage());
-            }
-            logger.info("worker fetch task service stopped");
-
-            latch.countDown();
-            logger.info("zookeeper service stopped");
-
         } catch (Exception e) {
             logger.error("worker server stop exception ", e);
             System.exit(-1);