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[BUG] master server will show exception for some time when master server restart, it's just dispatching task #2910

@davidzollo

Description

@davidzollo

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Describe the bug
[ERROR] 2020-06-06 15:46:22.683 org.apache.dolphinscheduler.server.master.consumer.TaskPriorityQueueConsumer:[152] - dispatch error
org.apache.dolphinscheduler.server.master.dispatch.exceptions.ExecuteException: fail to execute : Command [type=TASK_EXECUTE_REQUEST, opaque=1, bodyLen=1619] due to no suitable worker , current task need to default worker group execute
at org.apache.dolphinscheduler.server.master.dispatch.ExecutorDispatcher.dispatch(ExecutorDispatcher.java:87)
at org.apache.dolphinscheduler.server.master.consumer.TaskPriorityQueueConsumer.dispatch(TaskPriorityQueueConsumer.java:149)
at org.apache.dolphinscheduler.server.master.consumer.TaskPriorityQueueConsumer.run(TaskPriorityQueueConsumer.java:118)

To Reproduce
1、worker server runs normally, click start workflow ,
2、then restart master server , master server runtime log will show the following exception for some time(about 30 seconds), then master will go works normally

Which version of Dolphin Scheduler:
-[ dev-1.3.0 ]

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