issues: 653430454

This data as json

id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
653430454 MDU6SXNzdWU2NTM0MzA0NTQ= 4208 Support for duck Dask Arrays 3460034 closed 0     18 2020-07-08T16:23:12Z 2020-09-02T18:28:12Z 2020-09-02T18:28:12Z CONTRIBUTOR      

https://github.com/pydata/xarray/issues/525#issuecomment-531603357 raised the idea of adding "duck Dask Array" support to xarray as a way to handle xarray > Pint Quantity > Dask Array wrapping in a way that still allowed for most of xarray's Dask integration to work properly. With @rpmanser working on implementing the Dask collection interface in Pint (https://github.com/hgrecco/pint/pull/1129), I thought it best to elevate this to its own issue to track progress and discuss implementation on xarray's side (since hopefully @rpmanser or I can get started on it soon).

Two initial (and intertwined) discussion points that I'd like to bring up (xref https://github.com/hgrecco/pint/pull/1129#issuecomment-655197079):

  • How should xarray check for a duck Dask Array?
  • Is it acceptable for a Pint Quantity to always have the Dask collection interface defined (i.e., be a duck Dask array), even when its magnitude (what it wraps) is not a Dask Array?

cc @keewis, @shoyer, @crusaderky 

{
    "url": "https://api.github.com/repos/pydata/xarray/issues/4208/reactions",
    "total_count": 0,
    "+1": 0,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
   completed 13221727 issue

Links from other tables