nauu opened a new pull request #1481: Add null check in method checkEmail URL: https://github.com/apache/incubator-dolphinscheduler/pull/1481 ## What is the purpose of the pull request For #1480. The method checkEmail does not have a null check. When the email is empty, it will be a null point exception. So I fix it with a null check. ## Brief changelog - *CheckUtils.java* ## Verify this pull request This change added tests and can be verified as follows: - *Added CheckUtilsTest to verify the change.*
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