issue_comments: 573393003

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https://github.com/pydata/xarray/issues/3668#issuecomment-573393003 https://api.github.com/repos/pydata/xarray/issues/3668 573393003 MDEyOklzc3VlQ29tbWVudDU3MzM5MzAwMw== 3922329 2020-01-12T08:23:01Z 2020-01-12T08:23:01Z NONE

Zarr documentation is not entirely clear on whether metadata gets pickled or not with zarr.storage.DirectoryStore: https://zarr.readthedocs.io/en/stable/tutorial.html#pickle-support

but the code shows that the metadata is read from a file upon __init__, and I guess xarray is simply relying on zarr's own serialization, and there is no easy way to bypass it.

See https://github.com/zarr-developers/zarr-python/blob/v2.4.0/zarr/hierarchy.py#L113 and https://github.com/zarr-developers/zarr-python/blob/v2.4.0/zarr/storage.py#L785-L791

I think at this point I will just give up and mount the necessary directories on the client, but at least I have a much better understanding of the issue now.

Feel free to close if you think there's nothing else that can/should be done in xarray code about it.

 
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