lgcareer opened a new pull request #4211:
URL: https://github.com/apache/incubator-dolphinscheduler/pull/4211
## What is the purpose of the pull request
*[Feature-4138][Master]Cherry pick from dev to dispatch add sleep when
dispatch task to work error*
## Brief change log
*[Feature-4138][Master]Cherry pick from dev to dispatch add sleep when
dispatch task to work error*
- *Add maven-checkstyle-plugin to root pom.xml*
## Verify this pull request
*Run TaskPriorityQueueConsumerTest.java*
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