diff --git a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/ProcessInstanceServiceImpl.java b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/ProcessInstanceServiceImpl.java
index 75830e8df2..22b91317bd 100644
--- a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/ProcessInstanceServiceImpl.java
+++ b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/ProcessInstanceServiceImpl.java
@@ -34,6 +34,12 @@ import org.apache.dolphinscheduler.api.dto.gantt.GanttDto;
 import org.apache.dolphinscheduler.api.dto.gantt.Task;
 import org.apache.dolphinscheduler.api.enums.Status;
 import org.apache.dolphinscheduler.api.exceptions.ServiceException;
+import org.apache.dolphinscheduler.api.service.ExecutorService;
+import org.apache.dolphinscheduler.api.service.LoggerService;
+import org.apache.dolphinscheduler.api.service.ProcessDefinitionService;
+import org.apache.dolphinscheduler.api.service.ProcessInstanceService;
+import org.apache.dolphinscheduler.api.service.ProjectService;
+import org.apache.dolphinscheduler.api.service.UsersService;
 import org.apache.dolphinscheduler.api.utils.PageInfo;
 import org.apache.dolphinscheduler.api.utils.Result;
 import org.apache.dolphinscheduler.common.Constants;
@@ -81,6 +87,13 @@ import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 import java.util.function.Function;
 import java.util.stream.Collectors;