[Question] A code question about getting yarn task state

[xloya]

Recently, I looked at the code of the job status on YARN after the job was submitted and got the job status on the YARN.When I saw incubator-dolphinscheduler/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/task/AbstractCommandExecutor.java , I found a method named isSuccessOfYarnState(List appIds).Why here is a list of appid?I think through log file to get state is one-to-one with yarn app.I really hope to get the answer, thx!

最近我在看作业提交到yarn之后,获取yarn上作业状态的代码.当我看到incubator-dolphinscheduler/dolphinscheduler-server/src/main/java/org/apache/dolphinscheduler/server/worker/task/AbstractCommandExecutor.java这个类时,有个方法叫isSuccessOfYarnState(List appIds).为什么这里会是一个appid的列表?我理解的通过log文件获取当前app状态应该是一对一的关系.非常希望得到解答,谢谢!

Which version of DolphinScheduler:
-[dev-branch]

[davidzollo]

because shell task can submit many yarn task，the task runtime log will return many application ids

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因为 shell 任务类型可以写多个 MR 任务，这样的话，这个shell任务的运行日志里会返回多个 application id