AllenInstitute / AllenInstitute/ConnectsCommonConnectivity
wide_parquet mode + combined wide-matrix/pointer write API
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- Dominant language
- Jupyter Notebook
- Stars
- 4
- Forks
- 1
- PR merge metrics
- No merged PRs in 30d
Description
Problem: the wide_parquet mode designed in ARCHITECTURE.md was never built; all wide tables are raw write_deltalake calls in notebooks. Nothing enforces that pointer rows (CellFeatureMatrix, SynapseFeatureMatrix) and the parquet they point at are written together — dangling-pointer risk.
Fix: build wide_parquet; add a combined API that writes the payload (overwrite) then merges the pointer row, validating that index columns/paths agree.
Depends on: #13 (mode vocabulary).
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
Read ARCHITECTURE.md and the mode vocabulary from #13 first, then inspect the notebooks' raw write_deltalake calls and the CellFeatureMatrix and SynapseFeatureMatrix pointer rows. Done means wide_parquet exists and a combined API writes the payload before merging a validated pointer row, with index columns and paths agreeing.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- jupyter-notebook
- Domain
- data
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100