An open source, standard data file format for graph data storage and retrieval.
C-Rank Grade: A (Welcoming) - 60/100
External PR Merge Rate: 58%
Response Time: <1h
First Timer Success: 100%
apache/incubator-graphar has a recorded first-timer success rate of 100.0%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in apache/incubator-graphar respond to incoming external pull requests in approximately 0.1 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 60.3 places apache/incubator-graphar in the A tier.
The external contributor pull request merge rate for apache/incubator-graphar is 58.3%, based on public PR activity from non-core contributors.
apache/incubator-graphar does not currently have active "good first issue" tags indexed, but accepts external contributions through standard GitHub issue tracking.
Strict review standards in apache/incubator-graphar. Ensure PR scope matches issue requirements closely before requesting review.
Discussions in apache/incubator-graphar focus heavily on practical implementation feedback, code formatting standards, and issue reproduction details.
Unlinked PRs without issue context and changes that fail automated test suites face the highest review friction.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/apache/incubator-graphar?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
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Detected: UTC
Maintainers are most responsive around 23:00 UTC (23:00 UTC in your timezone). Recommended submission window is Monday - Wednesday from 20:00 to 00:00 UTC (20:00 - 00:00 UTC local).
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~4 hours (73% approval). Large PRs (>500 lines) take ~1 hours (26% approval). Keep your diff compact for rapid review.
Description As discussed in issue #804, the system-level libarrow.so provided in standard manylinux environments (or installed via system package managers) is often incomplete or lacks necessary components for our use case. A more robust solution is to link graphar.so directly against the libarrow.so bundled within the pyarrow python package. This ensures we are using a full-featured Arrow library that matches the Python environment. However, adopting this approach introduces several significant build and runtime challenges described below. The dependency relationship is illustrated as follows: graph TD A[pyarrow bundled libarrow.so] --> B[pyarrow.whl] A --> C[graphar.so <br> C++ Core] C --> D[graphar.whl <br> Python Binding] B -.-> D style A fill:#f9f,stroke:#333,stroke-width:2px style D fill:#bbf,stroke:#333,stroke-width:2px Loading Key Challenges 1. ABI Compatibility (The "Segfault" Risk) C++ ABI (Ap
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When evaluating whether to contribute to apache/incubator-graphar, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of apache/incubator-graphar acknowledge new external contributions in approximately <1 hour. Out of all submitted pull requests from non-core authors in the last 180-day window, 58.3% were successfully merged into the primary branch.
apache/incubator-graphar has a recorded first-timer success rate of 100.0%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~<1 hour. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 60.3 places apache/incubator-graphar in the Welcoming tier.
The external pull request merge rate is 58.3%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
apache/incubator-graphar does not have open beginner labels indexed currently, but external PRs for bugs and documentation improvements are evaluated via normal issue triage.
All metrics displayed for apache/incubator-graphar are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.