Creating index for single zarr-in-zip stores
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- Dominant language
- Python
- Stars
- 366
- Forks
- 96
- Avg merge
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- Merged PRs (30d)
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Description
Picking up from https://github.com/fsspec/kerchunk/issues/220#issuecomment-1677349599 it would be great to have an example of creating a kerchunk index for a zarr store archived into a zip file, under the following assumptions:
- The zip file is created using the flag -0 (store only without compression)
- Standard zarr codec's have been used to compress the individual chunks within the zarr file heirarching inside the zip file
- The zarr was saved using xarray.to_zarr with consolidated=True so that the .zmetadata file is present
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading the linked discussion in issue #220 and review how kerchunk currently creates indexes for archived stores. Use the stated xarray.to_zarr, consolidated .zmetadata, uncompressed zip, and standard Zarr codec assumptions to define the example; done means the example is documented and demonstrates index creation for this layout.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- data, documentation
- Issue type
- Documentation
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100