Add ability to reset stateful dashboards

[adbreind]

Some dashboards, like time-per-action and time-per-key, accumulate data over the lifetime of the scheduler.

It would be useful if a user/client could "reset" these to zero or, alternatively, create a new "instance" of these dashboards beginning at a point in code, so that output could be obtained just for subsequent (or even context-manager-guarded) operations.

[quasiben]

Hmm, I'm not sure how to go about doing this as those plots pull directly from data recorded in the scheduler:

distributed/distributed/scheduler.py

Lines 4193 to 4194 in dd28f7a

	# getting timing info compared with get_task_stream()
	ts.prefix.all_durations[action] += stop - start

But I agree it would be useful to reset or context manage these plots

[mrocklin]

Some of these plots reflect internal state for which we do not have a history. The charts mentioned, like time-per-action and time-per-key reflect the TaskPrefix class in the Scheduler. We could think about clearing this information within the scheduler, but with the current implementation we can't easily clear the display without clearing the aggregated knowledge. This could be changed, but it's not a trivial fix.

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On Thu, Oct 22, 2020 at 6:34 AM Benjamin Zaitlen ***@***.***> wrote: Hmm, I'm not sure how to go about doing this as those plots pull directly from data recorded in the scheduler: https://github.com/dask/distributed/blob/dd28f7af1446e71091e079f7fdceacf489899911/distributed/scheduler.py#L4193-L4194 But I agree it would be useful to reset or context manage these plots — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#4159 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACKZTCHHWNAWVIZ3KVTDF3SMAYG3ANCNFSM4SKOHGJA> .