Cylc set for a task with multiple outputs doesn't seem to do anything

Cylc Cylc Support
1

Perhaps I’m misunderstanding cylc set. But I have a task, with this sort of graph

    [[graph]]
        R1 = """
            foo:failed? => bar
            foo? => aaa
        """

When I do cylc set on foo, it doesn’t seem to do anything. Unless I am specific and do cylc set -o succeeded.

$ cylc set retry/run5 //20201010T0000Z/foo
Command queued
$ cylc show retry/run5 //20201010T0000Z/foo
title: (not given)
description: (not given)
URL: (not given)
state: waiting
prerequisites: (None)
outputs: ('⨯': not completed)
  ⨯ 20201010T0000Z/foo expired
  ⨯ 20201010T0000Z/foo submitted
  ⨯ 20201010T0000Z/foo submit-failed
  ⨯ 20201010T0000Z/foo started
  ⨯ 20201010T0000Z/foo succeeded
  ⨯ 20201010T0000Z/foo failed
output completion: incomplete
  ⨯ ┆  succeeded
  ⨯ ┆  or failed
$ cylc set -o succeeded retry/run5 //20201010T0000Z/foo
Command queued
$ cylc show retry/run5 //20201010T0000Z/foo
title: (not given)
description: (not given)
URL: (not given)
state: succeeded
prerequisites: (None)
outputs: ('⨯': not completed)
  ⨯ 20201010T0000Z/foo expired
  ✓ 20201010T0000Z/foo submitted
  ⨯ 20201010T0000Z/foo submit-failed
  ✓ 20201010T0000Z/foo started
  ✓ 20201010T0000Z/foo succeeded
  ⨯ 20201010T0000Z/foo failed
output completion: complete
  ✓ ┆  succeeded
  ⨯ ┆  or failed

Based on the examples in the cylc set --help docs

Examples:
  # complete all required outputs of 3/bar:
  $ cylc set my_workflow//3/bar

I expected that doing cylc set ... foo would set the failed and succeeded outputs. Or, is it, because its a ? task, it does nothing as they are all considered optional?

2

Yep.

This task can fall either way, it can either fail or succeeded so it doesn’t have any required outputs.

3

Note, in future the scheduler will log a warning if you try to set required outputs on a task that has no required outputs: `cylc set`: log warning when no outputs specified and task has no required outputs by MetRonnie · Pull Request #6505 · cylc/cylc-flow · GitHub