xwhfcenter opened a new issue #1836: MasterSchedulerThread BLOCKED URL: https://github.com/apache/incubator-dolphinscheduler/issues/1836 I reinstall dolphinscheduler 1.2.0 then configure my project and process definition. But when I click run, then nothing happens. And the process instance list is null. Following is my jstack file, and I see that MasterSchedulerThread is BLOCKED. Do you know why? And How can I fix it? [stack.txt](https://github.com/apache/incubator-dolphinscheduler/files/4063770/stack.txt)
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