[Improvement-5147][Service]This judgment always returns true (#5156)

* this expression which always evaluates "true"

* delete unused variables

* LogClientService add AutoCloseable

* reformat code

* reformat code

* reformat code

* add log in ProcessService

* reformat code

* Optimize the code

* Optimize the code

* [improvement]modify all methods that refer to LogClientService in the code.

* delete unused code

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/master/runner/MasterBaseTaskExecThread.java

@@ -23,7 +23,6 @@ import org.apache.dolphinscheduler.common.model.TaskNode;
 import org.apache.dolphinscheduler.common.task.TaskTimeoutParameter;
 import org.apache.dolphinscheduler.common.utils.JSONUtils;
 import org.apache.dolphinscheduler.dao.AlertDao;
-import org.apache.dolphinscheduler.dao.entity.ProcessDefinition;
 import org.apache.dolphinscheduler.dao.entity.ProcessInstance;
 import org.apache.dolphinscheduler.dao.entity.TaskInstance;
 import org.apache.dolphinscheduler.server.master.config.MasterConfig;
@@ -283,7 +282,6 @@ public class MasterBaseTaskExecThread implements Callable<Boolean> {
         logger.warn("process id:{} process name:{} task id: {},name:{} execution time out",
                 processInstance.getId(), processInstance.getName(), taskInstance.getId(), taskInstance.getName());
         // send warn mail
-        ProcessDefinition processDefine = processService.findProcessDefineById(processInstance.getProcessDefinitionId());
         alertDao.sendTaskTimeoutAlert(processInstance.getWarningGroupId(), processInstance.getId(), processInstance.getName(),
                 taskInstance.getId(), taskInstance.getName());
         return true;

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/utils/ProcessUtils.java

@@ -442,17 +442,11 @@ public class ProcessUtils {
     public static List<String> killYarnJob(TaskExecutionContext taskExecutionContext) {
         try {
             Thread.sleep(Constants.SLEEP_TIME_MILLIS);
-            LogClientService logClient = null;
             String log;
-            try {
-                logClient = new LogClientService();
+            try (LogClientService logClient = new LogClientService()) {
                 log = logClient.viewLog(Host.of(taskExecutionContext.getHost()).getIp(),
                         Constants.RPC_PORT,
                         taskExecutionContext.getLogPath());
-            } finally {
-                if (logClient != null) {
-                    logClient.close();
-                }
             }
             if (StringUtils.isNotEmpty(log)) {
                 List<String> appIds = LoggerUtils.getAppIds(log, logger);

dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/processor/TaskKillProcessor.java

@@ -107,7 +107,6 @@ public class TaskKillProcessor implements NettyRequestProcessor {
     /**
      * do kill
      *
-     * @param killCommand
      * @return kill result
      */
     private Pair<Boolean, List<String>> doKill(TaskKillRequestCommand killCommand) {
@@ -175,9 +174,7 @@ public class TaskKillProcessor implements NettyRequestProcessor {
      * @return Pair<Boolean, List < String>> yarn kill result
      */
     private Pair<Boolean, List<String>> killYarnJob(String host, String logPath, String executePath, String tenantCode) {
-        LogClientService logClient = null;
-        try {
-            logClient = new LogClientService();
+        try (LogClientService logClient = new LogClientService();) {
             logger.info("view log host : {},logPath : {}", host, logPath);
             String log = logClient.viewLog(host, Constants.RPC_PORT, logPath);
             List<String> appIds = Collections.emptyList();
@@ -194,10 +191,6 @@ public class TaskKillProcessor implements NettyRequestProcessor {
             return Pair.of(true, appIds);
         } catch (Exception e) {
             logger.error("kill yarn job error", e);
-        } finally {
-            if (logClient != null) {
-                logClient.close();
-            }
         }
         return Pair.of(false, Collections.emptyList());
     }

dolphinscheduler-service/src/main/java/org/apache/dolphinscheduler/service/log/LogClientService.java

@@ -39,7 +39,7 @@ import org.slf4j.LoggerFactory;
 /**
  * log client
  */
-public class LogClientService {
+public class LogClientService implements AutoCloseable {
 
     private static final Logger logger = LoggerFactory.getLogger(LogClientService.class);
 
@@ -67,6 +67,7 @@ public class LogClientService {
     /**
      * close
      */
+    @Override
     public void close() {
         this.client.close();
         this.isRunning = false;

dolphinscheduler-service/src/main/java/org/apache/dolphinscheduler/service/process/ProcessService.java

@@ -384,17 +384,11 @@ public class ProcessService {
      * @param processInstanceId processInstanceId
      */
     public void removeTaskLogFile(Integer processInstanceId) {
-
-        LogClientService logClient = null;
-
-        try {
-            logClient = new LogClientService();
         List<TaskInstance> taskInstanceList = findValidTaskListByProcessId(processInstanceId);
-
         if (CollectionUtils.isEmpty(taskInstanceList)) {
             return;
         }
-
+        try (LogClientService logClient = new LogClientService()) {
             for (TaskInstance taskInstance : taskInstanceList) {
                 String taskLogPath = taskInstance.getLogPath();
                 if (StringUtils.isEmpty(taskInstance.getHost())) {
@@ -408,14 +402,9 @@ public class ProcessService {
                     // compatible old version
                     ip = taskInstance.getHost();
                 }
-
                 // remove task log from loggerserver
                 logClient.removeTaskLog(ip, port, taskLogPath);
             }
-        } finally {
-            if (logClient != null) {
-                logClient.close();
-            }
         }
     }
 
@@ -2124,8 +2113,6 @@ public class ProcessService {
     /**
      * solve the branch rename bug
      *
-     * @param processData
-     * @param oldJson
      * @return String
      */
     public String changeJson(ProcessData processData, String oldJson) {
@@ -2180,6 +2167,7 @@ public class ProcessService {
 
     /**
      * add authorized resources
+     *
      * @param ownResources own resources
      * @param userId userId
      */