jcfhj opened a new issue #2998:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/2998
The error log information is as follows：
[ERROR] 2020-06-15 14:34:26.623
org.apache.dolphinscheduler.server.worker.runner.FetchTaskThread:[261] - task
instance is null. task id : 112745
[WARN] 2020-06-15 14:34:26.623
org.apache.dolphinscheduler.server.worker.runner.FetchTaskThread:[188] - remove
task queue : 2_77350_2_112745_-1 due to taskInstance is null
The reasons are as follows：
When the task is executed, the master server will first report to the table
t_ Ds_ task_ When an instance inserts a piece of data and the workserver
consumes it from the task queue, it will judge "if (verify task instance is
null (task instance)) {". In special scenarios, it will fail. I hope someone
can solve this problem
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