Community Health

Time between a new issue is opened and a maintainer responds Also called: bug response rate. The maintainer is believed to not “pile on” but try to solve an issue.

GHTorrent Database

SELECT avg(time_to_member_comment_in_days) as avg_days_to_member_comment, project_name, url
FROM
(
	SELECT DATEDIFF(earliest_member_comment, issue_created) time_to_member_comment_in_days, project_id, issue_id, project_name, url
	FROM
		(SELECT projects.id as project_id, 
				MIN(issue_comments.created_at) as earliest_member_comment, 
				issues.created_at as issue_created, 
				issues.id as issue_id, projects.name as project_name, url
		FROM msr14.repo_labels
			join projects on repo_labels.repo_id = projects.id
			join issue_labels on issue_labels.label_id = repo_labels.id
			join project_members on projects.id = project_members.repo_id
			join issues on issue_labels.issue_id = issues.id
			join issue_comments on issue_comments.issue_id = issues.id
		where repo_labels.name = 'bug'
			and issue_comments.user_id = project_members.user_id
		group by issues.id) as earliest_member_comments) as time_to_member_comment
group by project_id

SELECT avg(time_to_member_comment_in_days) as avg_days_to_member_comment, project_name, url
FROM
(
	SELECT DATEDIFF(earliest_member_comment, issue_created) time_to_member_comment_in_days, project_id, issue_id, project_name, url
	FROM
		(SELECT projects.id as project_id, 
				MIN(issue_comments.created_at) as earliest_member_comment, 
				issues.created_at as issue_created, 
				issues.id as issue_id, projects.name as project_name, url
		FROM projects
			join project_members on projects.id = project_members.repo_id
			join issues on issues.repo_id = projects.id
			join issue_comments on issue_comments.issue_id = issues.id
		where issue_comments.user_id = project_members.user_id
		group by issues.id) as earliest_member_comments) as time_to_member_comment
group by project_id

  SELECT issues.id                       AS "issue_id", 
         issues.created_at               AS "created_at",
         MIN(issue_comments.created_at)  AS "responded_to"
  FROM issues
  JOIN issue_comments
  ON issue_comments.issue_id = issues.id
  WHERE issue_comments.user_id IN 
       (SELECT users.id
      FROM users
      JOIN commits
      WHERE commits.author_id = users.id
      AND commits.project_id = 78852)
  AND issues.repo_id = 78852
  GROUP BY issues.id

Describe how the metric is encoded for sharing and communicating between programs.

Papers released in the academic literature that uses the metric.

Links to websites that add value to the understanding of the metric.

Authors of the metric page and authors who made significant changes.