open-index/open-github-meta

OpenGitHub Meta

What is it?

The full development metadata of 2 public GitHub repositories, fetched from the GitHub REST API and GraphQL API, converted to Parquet and hosted here for easy access.

Right now the archive has 1.1M rows across 8 tables in 80.8 MB of Zstd-compressed Parquet. Every issue, pull request, comment, code review, timeline event, file change, and CI status check is stored as a separate table you can load individually or query together.

This is the companion to OpenGitHub, which mirrors the real-time GitHub event stream via GH Archive. That dataset tells you what happened across all of GitHub. This one gives you the full picture for specific repos: complete issue threads, full PR review conversations, the state machine from open to close.

People use it for:

• Code review research with inline comments attached to specific diff lines
• Project health metrics like merge rates, review turnaround, label usage
• Issue triage and classification with full text, labels, and timeline
• Software engineering process mining from timeline event sequences

Last updated: 2026-03-29.

Repositories

Repository	Issues	PRs	Comments	Reviews	Timeline	Total
facebook/react	33.6K	19.2K	127.6K	20.1K	248.3K	814.2K
golang/go	75.7K	4.9K	0	323	107.3K	260.0K

How to download and use this dataset

Data lives at data/{table}/{owner}/{repo}/0.parquet. Load a single table, a single repo, or everything at once. Standard Hugging Face Parquet layout, works with DuckDB, datasets, pandas, and huggingface_hub out of the box.

Using DuckDB

DuckDB reads Parquet directly from Hugging Face, no download step needed. Save any query below as a .sql file and run it with duckdb < query.sql.

-- Top issue authors across all repos
SELECT
    author,
    COUNT(*) as issue_count,
    COUNT(*) FILTER (WHERE state = 'open') as open,
    COUNT(*) FILTER (WHERE state = 'closed') as closed
FROM read_parquet('hf://datasets/open-index/open-github-meta/data/issues/**/0.parquet')
WHERE is_pull_request = false
GROUP BY author
ORDER BY issue_count DESC
LIMIT 20;

-- PR merge rate by repo
SELECT
    split_part(filename, '/', 8) || '/' || split_part(filename, '/', 9) as repo,
    COUNT(*) as total_prs,
    COUNT(*) FILTER (WHERE merged) as merged,
    ROUND(COUNT(*) FILTER (WHERE merged) * 100.0 / COUNT(*), 1) as merge_pct
FROM read_parquet('hf://datasets/open-index/open-github-meta/data/pull_requests/**/0.parquet', filename=true)
GROUP BY repo
ORDER BY total_prs DESC;

-- Most reviewed PRs by number of review submissions
SELECT
    r.pr_number,
    COUNT(*) as review_count,
    COUNT(*) FILTER (WHERE r.state = 'APPROVED') as approvals,
    COUNT(*) FILTER (WHERE r.state = 'CHANGES_REQUESTED') as changes_requested
FROM read_parquet('hf://datasets/open-index/open-github-meta/data/reviews/**/0.parquet') r
GROUP BY r.pr_number
ORDER BY review_count DESC
LIMIT 20;

-- Label activity over time (monthly)
SELECT
    date_trunc('month', created_at) as month,
    COUNT(*) as label_events
FROM read_parquet('hf://datasets/open-index/open-github-meta/data/timeline_events/**/0.parquet')
WHERE event_type = 'LabeledEvent'
GROUP BY month
ORDER BY month;

-- Largest PRs by lines changed
SELECT
    number,
    additions,
    deletions,
    changed_files,
    additions + deletions as total_lines
FROM read_parquet('hf://datasets/open-index/open-github-meta/data/pull_requests/**/0.parquet')
ORDER BY total_lines DESC
LIMIT 20;

Using Python (uv run)

These scripts use PEP 723 inline metadata. Save as a .py file and run with uv run script.py. No virtualenv or pip install needed.

Stream issues:

# /// script
# requires-python = ">=3.11"
# dependencies = ["datasets"]
# ///
from datasets import load_dataset

ds = load_dataset("open-index/open-github-meta", "issues", streaming=True)
for i, row in enumerate(ds["train"]):
    print(f"#{row['number']}: [{row['state']}] {row['title']} (by {row['author']})")
    if i >= 19:
        break

Load a specific repo:

# /// script
# requires-python = ">=3.11"
# dependencies = ["datasets"]
# ///
from datasets import load_dataset

ds = load_dataset(
    "open-index/open-github-meta",
    "pull_requests",
    data_files="data/pull_requests/facebook/react/0.parquet",
)
df = ds["train"].to_pandas()
print(f"Loaded {len(df)} pull requests")
print(f"Merged: {df['merged'].sum()} ({df['merged'].mean()*100:.1f}%)")
print(f"\nTop 10 by lines changed:")
df["total_lines"] = df["additions"] + df["deletions"]
print(df.nlargest(10, "total_lines")[["number", "additions", "deletions", "total_lines"]].to_string(index=False))

Download files:

# /// script
# requires-python = ">=3.11"
# dependencies = ["huggingface-hub"]
# ///
from huggingface_hub import snapshot_download

# Download only issues
snapshot_download(
    "open-index/open-github-meta",
    repo_type="dataset",
    local_dir="./open-github-meta/",
    allow_patterns="data/issues/**/*.parquet",
)
print("Downloaded issues parquet files to ./open-github-meta/")

For faster downloads, install pip install huggingface_hub[hf_transfer] and set HF_HUB_ENABLE_HF_TRANSFER=1.

Dataset structure

issues

Both issues and PRs live in this table (check is_pull_request). Join with pull_requests on number for PR-specific fields like merge status and diff stats.

Column	Type	Description
number	int32	Issue/PR number (primary key)
node_id	string	GitHub GraphQL node ID
is_pull_request	bool	True if this is a PR
title	string	Title
body	string	Full body text in Markdown
state	string	open or closed
state_reason	string	completed, not_planned, or reopened
author	string	Username of the creator
created_at	timestamp	When opened
updated_at	timestamp	Last activity
closed_at	timestamp	When closed (null if open)
labels	string (JSON)	Array of label names
assignees	string (JSON)	Array of assignee usernames
milestone_title	string	Milestone name
milestone_number	int32	Milestone number
reactions	string (JSON)	Reaction counts ({"+1": 5, "heart": 2})
comment_count	int32	Number of comments
locked	bool	Whether the conversation is locked
lock_reason	string	Lock reason

pull_requests

PR-specific fields. Join with issues on number for title, body, labels, and other shared fields.

Column	Type	Description
number	int32	PR number (matches issues.number)
merged	bool	Whether the PR was merged
merged_at	timestamp	When merged
merged_by	string	Username who merged
merge_commit_sha	string	Merge commit SHA
base_ref	string	Target branch (e.g. main)
head_ref	string	Source branch
head_sha	string	Head commit SHA
additions	int32	Lines added
deletions	int32	Lines deleted
changed_files	int32	Number of files changed
draft	bool	Whether the PR is a draft
maintainer_can_modify	bool	Whether maintainers can push to the head branch

comments

Conversation comments on issues and PRs. These are the threaded discussion comments, not inline code review comments (those are in review_comments).

Column	Type	Description
id	int64	Comment ID (primary key)
issue_number	int32	Parent issue/PR number
author	string	Username
body	string	Comment body in Markdown
created_at	timestamp	When posted
updated_at	timestamp	Last edit
reactions	string (JSON)	Reaction counts
author_association	string	OWNER, MEMBER, CONTRIBUTOR, NONE, etc.

review_comments

Inline code review comments on PR diffs. Each comment is attached to a specific file and line in the diff.

Column	Type	Description
id	int64	Comment ID (primary key)
pr_number	int32	Parent PR number
review_id	int64	Parent review ID
author	string	Reviewer username
body	string	Comment body in Markdown
path	string	File path in the diff
line	int32	Line number
side	string	LEFT (old code) or RIGHT (new code)
diff_hunk	string	Surrounding diff context
created_at	timestamp	When posted
updated_at	timestamp	Last edit
in_reply_to_id	int64	Parent comment ID (for threaded replies)

reviews

PR review decisions. One row per review action on a PR.

Column	Type	Description
id	int64	Review ID (primary key)
pr_number	int32	Parent PR number
author	string	Reviewer username
state	string	APPROVED, CHANGES_REQUESTED, COMMENTED, DISMISSED
body	string	Review summary in Markdown
submitted_at	timestamp	When submitted
commit_id	string	Commit SHA that was reviewed

timeline_events

The full lifecycle of every issue and PR. Every label change, assignment, cross-reference, merge, force-push, lock, and other state transition.

Column	Type	Description
id	string	Event ID (node_id or synthesized)
issue_number	int32	Parent issue/PR number
event_type	string	Event type (see below)
actor	string	Username who triggered the event
created_at	timestamp	When it happened
database_id	int64	GitHub database ID for the event
label_name	string	Label name (labeled, unlabeled)
label_color	string	Label hex color
state_reason	string	Close reason: COMPLETED, NOT_PLANNED (closed)
assignee_login	string	Username assigned/unassigned (assigned, unassigned)
milestone_title	string	Milestone name (milestoned, demilestoned)
title_from	string	Previous title before rename (renamed)
title_to	string	New title after rename (renamed)
ref_type	string	Referenced item type: Issue or PullRequest (cross-referenced, referenced)
ref_number	int32	Referenced issue/PR number
ref_url	string	URL of the referenced item
will_close	bool	Whether the reference will close this issue
lock_reason	string	Lock reason (locked)
data	string (JSON)	Remaining event-specific payload (common fields stripped)

Event types: labeled, unlabeled, closed, reopened, assigned, unassigned, milestoned, demilestoned, renamed, cross-referenced, referenced, locked, unlocked, pinned, merged, review_requested, head_ref_force_pushed, head_ref_deleted, ready_for_review, convert_to_draft, and more.

Common fields (actor, created_at, database_id and extracted columns above) are stored in dedicated columns and removed from data to reduce storage. The data field contains only remaining event-specific payload. See the GitHub GraphQL timeline items documentation for the full type catalog.

pr_files

Every file touched by each pull request, with per-file diff statistics.

Column	Type	Description
pr_number	int32	Parent PR number
path	string	File path
additions	int32	Lines added
deletions	int32	Lines deleted
status	string	added, removed, modified, renamed
previous_filename	string	Original path (for renames)

commit_statuses

CI/CD status checks and GitHub Actions results for each commit.

Column	Type	Description
sha	string	Commit SHA
context	string	Check name (e.g. ci/circleci, check:build)
state	string	success, failure, pending, error
description	string	Status description
target_url	string	Link to CI details
created_at	timestamp	When reported

Dataset statistics

Table	Rows	Description
issues	109.4K	Issues and pull requests (shared metadata)
pull_requests	24.1K	PR-specific fields (merge status, diffs, refs)
comments	104.6K	Conversation comments on issues and PRs
review_comments	23.1K	Inline code review comments on PR diffs
reviews	20.4K	PR review decisions
timeline_events	355.6K	Activity timeline (labels, closes, merges, assignments)
pr_files	273.1K	Files changed in each pull request
commit_statuses	164.0K	CI/CD status checks per commit
Total	1.1M

How it's built

The sync pipeline uses both GitHub APIs. The REST API handles bulk listing: issues, comments, and review comments are fetched repo-wide with since-based incremental pagination and parallel page fetching across multiple tokens. The GraphQL API handles per-item detail: one query grabs reviews, timeline events, file changes, and commit statuses in a single round trip, with automatic REST fallback for PRs with more than 100 files or reviews.

Multiple GitHub Personal Access Tokens rotate round-robin to spread rate limit load. The pipeline is fully incremental and idempotent: re-running picks up only what changed since the last sync.

Everything lands in per-repo DuckDB files first, then gets exported to Parquet with Zstd compression for publishing here. No filtering, deduplication, or content changes. Bot activity, automated PRs, CI noise, Dependabot upgrades, all of it is preserved, because that's how repos actually work.

Known limitations

• Point-in-time snapshot. Data reflects the state at the last sync, not real-time. Incremental updates capture everything that changed since the previous sync.
• Bot activity included. Comments and PRs from bots (Dependabot, Renovate, GitHub Actions, etc.) are included without filtering. This is intentional. Filter on author if you want humans only.
• JSON columns. labels, assignees, reactions, and data contain JSON strings. Use json_extract() in DuckDB or json.loads() in Python.
• Body text can be large. Issue and comment bodies contain full Markdown, sometimes with embedded images. Project only the columns you need for memory-constrained workloads.
• Timeline data varies by event type. The data field in timeline_events contains the raw event payload as JSON. The schema depends on event_type.

Personal and sensitive information

Usernames, user IDs, and author associations are included as they appear in the GitHub API. All data was already publicly accessible on GitHub. Email addresses do not appear in this dataset (they exist only in git commit objects, which are in the separate code archive, not here). No private repository data is present.

License

Released under the Open Data Commons Attribution License (ODC-By) v1.0. The underlying data is sourced from GitHub's public API. GitHub's Terms of Service apply to the original data.

Thanks

All the data here comes from GitHub's public REST API and GraphQL API. We are grateful to the open-source maintainers and contributors whose work is represented in these tables.

• OpenGitHub, our companion dataset covering the full GitHub event stream via GH Archive by Ilya Grigorik
• Built with DuckDB (Go driver), Apache Parquet (Zstd compression), published via Hugging Face Hub

Questions, feedback, or issues? Open a discussion on the Community tab.