为什么很多分布式系统都是以DAG（Directed acyclic graph ）实现 …
DAG 往往用来描述事物之间的依赖关系或工作流中子流程之间的顺序，所以 DAG 中一定存在入度为 0 和出度为 0 的节点。 入度为 0 的节点表示流程的开始，出度为 0 的节点表示流程的结束。
Can someone explain in simple terms to me what a directed …
Feb 17, 2010 · 6 A DAG is a graph where everything flows in the same direction and no node can reference back to itself. Think of ancestry trees; they are actually DAGs. All DAGs have Nodes …
How to Trigger a DAG on the success of a another DAG in Airflow …
Apr 30, 2020 · I have a python DAG Parent Job and DAG Child Job. The tasks in the Child Job should be triggered on the successful completion of the Parent Job tasks which are run daily. …
DAG marked as "success" if one task fails, because of trigger
Aug 7, 2018 · However, since end is the last task and succeeds, the DAG is always marked as SUCCESS. How can I configure my DAG so that if one of the tasks failed, the whole DAG is …
如何理解DAG数据结构，并且用浅显易懂的话说出来？ - 知乎
DAG是一种数据存储结构，从它被发明的30多年来一直都有人使用，本身并没有问题。 但它和区块链的区别在于DAG没有传统意义上的共识，每笔交易的可信与否取决于相信这笔交易的人数 …
python - How to Run a Simple Airflow DAG - Stack Overflow
Jan 23, 2017 · I am totally new to Airflow. I would like to run a simple DAG at a specified date. I'm struggling to make difference between the start date, the execution date, and backfilling. And …
airflow - Is there a benefit to use the "with dag as DAG (...)" clause ...
@jonrsharpe I see that the the dag is pushed to a dag context manager, which seems to be some kind of collection. Does that mean are supposed to use the "with ... as " clause when creating …
Implementing a DAG in python - Stack Overflow
Feb 27, 2019 · I am implementing a DAG in python. I am using a dictionary to implement the DAG. Each key represents a node in the graph. And the value associated with a key …
python - Airflow - find dag run of specific dag id by execution date ...
Jan 10, 2010 · I would like to find all the dag runs for a specific dag for a specific execution date. As I read on the documentation there is this function: dag_runs = …
How to set a number as retry condition in airflow DAG?
Oct 20, 2020 · In my Airflow DAG i have 4 tasks task_1 >> [task_2,task_3]>> task_4 task_4 runs only after a successful run of both task_2 and task_3 How do i set a condition such as : if …