I (and Apigee) would like to have the DAG Graph paint old DagRuns based on
the tasks (and ids) that ran, and not based off of the current DAG from the
DagBag. In order to do that, I need to be able to map a DagRun, and one way
is from the TaskInstance table. However that doesn't actually contain links
between tasks, but it could.

Does anyone feel strongly against storing upstream and downstream task_ids
in the taskinstance table as a first step? Our goal is NOT to be able to
rerun the past, but to be able to see the past (and provide links to the
taskinstance details and logs.

Thanks,
Ben

*--*
*ben tallman* | *apigee
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