Race condition in ChunksToZarr when template is not supplied explicitly as an xarray.Dataset

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#85 opened on Jul 7, 2023 1 comment 1 reaction 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 25/100

Issue type: Bug
Clarity: Needs clarification
Activity status: Stale
Tech stack: python
Domain: data-engineering, distributed-systems

Research direction

Start by locating the ChunkToZarr implementation and tracing how the template is written when no explicit xarray.Dataset is supplied. Review the linked zarr-python issue and reproduce concurrent worker writes if possible; done means concurrent execution no longer produces invalid Zarr files.

Written by the indexing model from the issue text.

Description

bug

Due to https://github.com/zarr-developers/zarr-python/issues/1435, ChunkToZarr can result in invalid Zarr files if the template is written simultaneously from different workers.

Dominant language: Python
Stars: 170
Forks: 15
Avg merge: 18h 27m
Merged PRs (30d): 1

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