CommitMessages

Commit Messages

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1.3 billion commit messages extracted from GHTorrent dumps.

The dataset consists of 3 files:

1. commits.bin - commit hashes, 24GB.
2. repos.txt.xz - GitHub repository names, 5GB.
3. messages.txt.xz - commit messages, 17GB.

The precise number of commits is 1288456749. There can be duplicate commits. Please contribute a deduplicated dataset if you can.

Format

1. commits.bin - continuous binary stream, 20 bytes per commit hash. The hashes are random by definition, so it makes no sense to compress this file.
2. repos.txt.xz - strings separated by \0 - NULL character, xz-compressed. The order matches commits.bin. There is a trailing '\0'.
3. messages.txt.xz - strings separated by \0, xz-compressed. The order matches commits.bin. There is a trailing '\0'.

Sample code

Python:

import lzma
from custom_newline import CustomNewlineReader

with open("commits.bin", "rb") as commf:
    with CustomNewlineReader(lzma.open("repos.txt.xz"), b"\0") as reposf:
        with CustomNewlineReader(lzma.open("messages.txt.xz"), b"\0") as msgf:
            for msg, repo in zip(msgf, reposf):
                commit = commf.read(20).hex()
                print(commit, repo.decode(), msg.decode())
                

custom_newline.py is included into this repository.

Origin

GHTorrent MongoDB dumps before 2019-03-18. The command to generate the dataset was:

(
  for dd in 2019-03-17 2019-03-16 ... 2015-12-01; do
    wget -O - http://ghtorrent-downloads.ewi.tudelft.nl/mongo-daily/mongo-dump-$dd.tar.gz |
    tar -xzO dump/github/commits.bson
  done
  for dd in 2015-12-01 2015-10-03 2015-08-03; do
    wget -O - http://ghtorrent-downloads.ewi.tudelft.nl/mongo-full/commits-dump.$dd.tar.gz |
    tar -xzO dump/github/commits.bson
  done
  wget -O - http://ghtorrent-downloads.ewi.tudelft.nl/mongo-full/commits-1-dump.2015-08-04.tar.gz |
  tar -xzO dump/github/commits.bson
) | python3 parse.py

2019-03-17 2019-03-16 ... 2015-12-01 are the dump dates from ghtorrent.org/downloads.html. parse.py is included into this repository.

License

Open Data Commons Open Database License (ODbL)