apache/lucenenet - Open Source PR Review Scorecard

Apache Lucene.NET is an open-source full-text search library written in C#, ported from the Apache Lucene project.

C-Rank Grade: A (Welcoming) - 66/100

External PR Merge Rate: 78%

Response Time: 16h

First Timer Success: 60%

Frequently Asked Questions

Is apache/lucenenet welcoming to first-time open-source contributors?

apache/lucenenet has a recorded first-timer success rate of 60.0%. Repositories ranked A typically provide actionable feedback during code reviews and actively nurture new community contributors.

How fast can I expect code review feedback on my pull request?

Maintainers in apache/lucenenet respond to incoming external pull requests in approximately 16.3 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.

What does the 66.3 C-Rank™ score (A Tier) represent?

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 66.3 places apache/lucenenet in the A tier.

What is the external contributor pull request merge rate for apache/lucenenet?

The external contributor pull request merge rate for apache/lucenenet is 77.9%, based on public PR activity from non-core contributors.

Are there Good First Issues available in apache/lucenenet?

apache/lucenenet currently has 2 active issue(s) tagged with beginner-friendly labels like "good first issue", "beginner", or "up-for-grabs".

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apache/lucenenet

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Apache Lucene.NET is an open-source full-text search library written in C#, ported from the Apache Lucene project.

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AI Maintainer Review Guidelines

Review Persona

Welcoming Community Builder

Warmth Score
8.4/10
Patience Score
8.4/10
Nitpick Rate
45%

Highly welcoming maintainers in apache/lucenenet. Prompt code reviews with positive guidance for new contributors.

Top PR Submission Do's

  • •Ensure code complies with the project coding style
  • •Keep PRs scoped to a single concern
  • •Include context and link to the related issue

Top PR Friction Pitfalls (Don'ts)

  • •Do not submit PRs without linking an issue
  • •Do not break existing tests without fixing them
  • •Do not mix unrelated refactors in a single PR
Response Velocity
16 hours
Standard maintainer review cycle

Average Response Latency

Tracks hours until a maintainer leaves a review, comment, or PR response.

Merge Efficiency
77.9%
High acceptance rate for external PRs

External Acceptance Rate

Percentage of community pull requests successfully merged into main.

First-Timer Success
60.0%
Strong first-timer PR acceptance rate

First PR Conversion

Rate at which developers submitting their first repository PR succeed.

Active Maintainers
9 core
Highly collaborative maintainer core
Diagnostic Health HUD
77.9%
Merge Gauge
60.0%
1st-Timer
Community Vibe67/100

Embed C-Rank Badge

Show contributors that your repository actively reviews and merges external pull requests.

GetMerged C-Rank badge for apache/lucenenet
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Active Good First Issues (3)

View on GitHub

Is there an existing issue for this? I have searched the existing issues Task description There are currently several issues with the implementation of FileSupport.GetCanonicalPath(), which is mostly a port from Apache Harmony. This method is on a required path for nearly all users, so it would be good to ensure that it is optimized and fully functional. No guard clause for null check, which should throw ArgumentNullException Logic is allocating 1 extra byte to the temporary array, appending a 0 byte at the end, converting to string, then removing the trailing \0 character that the 0 byte creates. It would be better just to omit the null character from the buffer. The part that resolves symbolic links was not ported (there is a LUCENENET TODO for it in the code). The behavior of the GetOrAdd() method already allows racing threads to both run the business logic without blocking. If we move the logic that builds the string into the factory parameter of this method, we can elimina

📅 Opened Jul 6, 2026💬 3 comments
Quality: 40/100Contribute

Very minor issue for potential clean up and standardisation. Searching the codebase finds: 21 for <?xml version="1.0" encoding="UTF-8"?> 90 for <?xml version="1.0" encoding="utf-8"?> 2 for <?xml version="1.0"?> 120 for <?xml version="1.0"... From Google below The short answer is no, it doesn't need to be capitalized, but it can be. According to the official W3C XML specifications, character encoding names are case-insensitive. That means XML parsers will treat all of the following exactly the same way: encoding="utf-8" (Most common) encoding="UTF-8" (Also very common) encoding="Utf-8" Best Practices While both work perfectly, utf-8 (lowercase) or UTF-8 (uppercase) are the widely accepted standards. Here is why developers generally lean toward one or the other: Lowercase (utf-8): This is the default output for many modern web frameworks, tools, and build engines. It keeps the string uniform with the rest of your lowercased XML attributes (like version="1.0"). Uppercase (UTF-8): T

📅 Opened Jun 11, 2026💬 0 comments
Quality: 80/100Contribute

Is there an existing issue for this? I have searched the existing issues Task description The SonarCloud quality gate issues have been failing on master for some time; we should get those resolved or suppress them as needed. The latest run shows: Failed conditions 16 Security Hotspots E Security Rating on New Code (required ≥ A) C Reliability Rating on New Code (required ≥ A)

📅 Opened Apr 23, 2026💬 0 comments
Quality: 30/100Contribute
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Contributor Compatibility & Review Speed Analysis for apache/lucenenet

When evaluating whether to contribute to apache/lucenenet, 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/lucenenet acknowledge new external contributions in approximately 16 hours. Out of all submitted pull requests from non-core authors in the last 180-day window, 77.9% were successfully merged into the primary branch.

Frequently Asked Questions - Contributing to apache/lucenenet

01

Is apache/lucenenet welcoming to first-time open-source contributors?

apache/lucenenet has a recorded first-timer success rate of 60.0%. Repositories ranked Welcoming typically provide actionable feedback during code reviews and actively nurture new community contributors.

02

How fast can I expect code review feedback on my pull request?

The initial maintainer response time averages ~16 hours. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.

03

What does the 66.3 C-Rank™ score represent?

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 66.3 places apache/lucenenet in the Welcoming tier.

04

What is the external contributor pull request merge rate for apache/lucenenet?

The external pull request merge rate is 77.9%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.

05

Are there beginner Good First Issues open in apache/lucenenet?

Yes, apache/lucenenet currently has 2 active issue(s) tagged with beginner-friendly labels. You can inspect these directly from the repository issues tab.

GetMerged C-Rank™ Indexing Standard

All metrics displayed for apache/lucenenet 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.