quanzhian opened a new issue #5917:
URL: https://github.com/apache/dolphinscheduler/issues/5917
**bug描述**
前端点击运行一个工作流，2台master服务同时读取到了command表的同一条命令数据，并同时起了2个相同实例去运行这个工作流
**排查原因**
先查看了api-server的日志，发现只有一次请求(怀疑是否连续点击出现的，经过排查排除该原因)
然后查了2个master的日志，发现同一时间(相差2毫秒级别)同一条command数据被2个master都读取到了
以下是第一台master-server的日志
[INFO] 2021-07-29 15:43:15.022
org.apache.dolphinscheduler.server.master.runner.MasterSchedulerService:[145] -
find one command: id: 4761, type: START_PROCESS
以下是第二台master-server的日志
[INFO] 2021-07-29 15:43:15.020
org.apache.dolphinscheduler.server.master.runner.MasterSchedulerService:[145] -
find one command: id: 4761, type: START_PROCESS
2台master-server都做了分发，导致同一时间创建了2条工作流实例去运行！
**Which version of Dolphin Scheduler:**
-[1.3.6]
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