execdf opened a new issue #4848:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/4848
I install multiple ds worker on cluster,and then i find each worker will
occupy a part of db connection.
When i try to login at fore-end ,but fail,and then i fould a exception
throws a back-end about jdbc connect fail .
May be you should seek a plan to replace it 。

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