issue_comments: 363931288

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https://github.com/pydata/xarray/issues/1895#issuecomment-363931288 https://api.github.com/repos/pydata/xarray/issues/1895 363931288 MDEyOklzc3VlQ29tbWVudDM2MzkzMTI4OA== 1217238 2018-02-07T22:22:40Z 2018-02-07T22:22:40Z MEMBER

Do these objects happen to store any cached results? I'm seeing odd performance issues around these objects and am curious about any ways in which they might be fancy.

I don't think there's any caching here. All of these objects are stateless, though ZarrArrayWrapper does point back to a ZarrStore object and a zarr.Group object.

Any concerns about recreating these objects for every access?

No, not particularly, though potentially opening a zarr store could be a little expensive. I'm mostly not sure how this would be done. Currently, we open files, create array objects, do some lazy decoding and then create dask arrays with from_array.

 
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