Hey Jason, For (2), by default, task1 will start running again. You'll have two runs going at the same time. If you want to prevent this, you can set max_active_runs to 1 in your DAG.
Cheers, Chris On Mon, May 16, 2016 at 1:09 PM, Jason Chen <chingchien.c...@gmail.com> wrote: > I have two questions > > (1) For the airflow UI: "Tree view", it lists the tasks along with the time > highlighted in the top (say, 08:30; 09:00, etc). What's the meaning of > time? It looks not the UTC time of the task was running. I know in > overall, airflow uses UTC time > (2) I have a DAG with two tasks: task1 --> task2 > Task1 is running hourly and could take longer than one hour to run, > sometimes. > In such a setup, task1 will be triggered hourly and what happens if the > previous task1 is still running ? Will the "new" task1 be queued ? > > Thanks. > Jason >
