issues: 295146502

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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
295146502 MDU6SXNzdWUyOTUxNDY1MDI= 1894 Zarr keys include variable name 306380 closed 0     1 2018-02-07T13:56:32Z 2018-02-17T04:40:15Z 2018-02-17T04:40:15Z MEMBER      

When using open_zarr on a dataset with many variables the keynames include the variable name, like 

('zarr-temperature-1234', 1, 3, 2)

In the distributed scheduler these keynames get shortened to prefixes like zarr-temperature and used both for scheduling heuristics (all keys with the same prefix are expected to take similar-ish amounts of time) and for diagnostics, such as in the progress bar plot below:

We may want to avoid including the variable name into the keyname here in order to avoid breaking these out into several groups. Instead you might consider putting the variable name within the key as another member of the tuple like the following:

('zarr-1234', 'temperature', 1, 3 ,2)

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