Code diffs and commit messages from top1000-2000 Java projects in GitHub

This dataset contains pairs from top 1000-2000 Java projects in GitHub via GitHub Developer API.

The structure of files is as follows:

./       # Each directory contains commits of one project.

./          # Each directory contains one commit information, and
                                                   # the commit-sha is the primary key of this commit in GitHub. 
                                                   # The children in this directory have 3 types: the file
                                                   # "commit_msg", multiple directories "", and the file
                                                   # "error". 

commit_msg                           # This file contains one line, representing the commit
                                             # message. 

/                            # The name of this directory is the changed file name.

patch                            # The code diffs of this , describing
                                    # which lines are added and which lines are
                                    # removed with some same lines context.

/

patch

error                                       # This file contains the error message when crawling
                                              # from GitHub. If this file exists, the directories
                                              #  will not exist.