From b4974241c71715eba9904ab91116f3288d21e4e6 Mon Sep 17 00:00:00 2001
From: qiaozhanwei <qiaozhanwei@analysys.com.cn>
Date: Tue, 18 Aug 2020 10:57:25 +0800
Subject: [PATCH] if task is null , set task type is null instead of "null"

---
 .../dolphinscheduler/api/service/ProcessDefinitionService.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/ProcessDefinitionService.java b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/ProcessDefinitionService.java
index 19b38ea46f..91ea4f9bd0 100644
--- a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/ProcessDefinitionService.java
+++ b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/ProcessDefinitionService.java
@@ -1305,7 +1305,7 @@ public class ProcessDefinitionService extends BaseDAGService {
                     ProcessInstance processInstance = processInstanceList.get(i);
                     TaskInstance taskInstance = taskInstanceMapper.queryByInstanceIdAndName(processInstance.getId(), nodeName);
                     if (taskInstance == null) {
-                        treeViewDto.getInstances().add(new Instance(-1, "not running", "null"));
+                        treeViewDto.getInstances().add(new Instance(-1, "not running", null));
                     } else {
                         Date startTime = taskInstance.getStartTime() == null ? new Date() : taskInstance.getStartTime();
                         Date endTime = taskInstance.getEndTime() == null ? new Date() : taskInstance.getEndTime();