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Description
I don't really understand how to use the new dimension_separator keyword, in particular:
- Creating a
DirectoryStore(dimension_separator="/")does not have the effect I would expect (see code and problem description below). - Why does zarr still have the
NestedDirectoryStore? Shouldn't it be the same asDirectoryStore(dimension_separator="/")? Hence I would assume thatNestedDirectoryStorecould either be removed or (if to be kept for legacy purposes) should just map toDirectoryStore(dimension_seperator="/").
Minimal, reproducible code sample, a copy-pastable example if possible
import zarr
store = zarr.DirectoryStore("test.zarr", dimension_separator="/")
g = zarr.open(store, mode="a")
ds = g.create_dataset("test", shape=(10, 10, 10))
ds[:] = 1Problem description
Now, I would assume that the chunks are nested, but I get:
$ ls test.zarr/test
0.0.0
but to, to my confusion, also this:
$ cat test.zarr/test/.zarray
...
"dimension_separator": "/",
...
If I use NestedDirectoryStore instead, the chunks are nested as expected.
Version and installation information
Please provide the following:
- Value of
zarr.__version__: 2.8.3 - Value of
numcodecs.__version__: 0.7.3 - Version of Python interpreter: 3.8.6
- Operating system: Linux
- How Zarr was installed: using conda
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