When iterating all nodes for a particular job under the `wfapi`, all currently running stageFlowNodes have status "SUCCESS".
Basically what I'm seeing is the topmost entry in `/wfapi` has "status": "IN_PROGRESS", and under stages it'll aslo have "status": "IN_PROGRESS".
But hitting the api under the "self" link for the stage (for example `execution/node/17/wfapi/describe`) the response has "status": "IN_PROGRESS", but all stageFlowNodes are "SUCCESS".
If the execution of one of them fails, it'll change from SUCCESS to FAILED.
This makes it a bit tricky to figure out which of these stageFlowNodes is the one actually marking the stage as "IN_PROGRESS".