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Posted to commits@dolphinscheduler.apache.org by GitBox <gi...@apache.org> on 2021/02/23 06:43:40 UTC

[GitHub] [incubator-dolphinscheduler] jepsonzhang commented on issue #4838: [Bug]worker has been in the running state

jepsonzhang commented on issue #4838:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/4838#issuecomment-783950009


   这个是和目前海豚的停止机制有关，当Api-server接受到外部的命令的时候，会像数据库插入一条command用于停止，master抢到锁之后，从数据库拿到这个command，会将任务流的状态改成准备停止，然后找到任务流对应的运行的任务列表，下发命令给对应的worker，由worker去关闭对应的task的进程，关闭完了再通知master，master再去修改对应的taskInstance的状态，然后master会不停的查看所有运行中的task的状态变成结束的状态，是的话，最终才会把任务流的状态改成停止状态，海豚里面用了大量的异步+状态机来处理这些状态的变迁问题。


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