{"action":"created","comment":{"url":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/comments/49821907","id":49821907,"diff_hunk":"@@ -0,0 +1,81 @@\n+---\n+layout: page\n+title: Semantic Specification\n+---\n+\n+## Concepts and Terminology\n+\n+A **Trace** represents the potentially distributed, potentially concurrent data/execution path in a (potentially distributed, potentially concurrent) system.\n+\n+A **Span** represents a logical unit of work in the system that has a start time and an end time. Spans may be nested and ordered to model parent-child and casual relationships. A Trace can be thought of as a tree of Spans.\n+\n+Every Span has zero or more **Logs**, each of which being a timestamped message with an optional structured data payload of arbitrary size.\n+\n+Every Span may also have zero or more key/value **Tags**, which do not have timestamps and simply annotate the spans.\n+\n+A **Trace Context** encapsulates the smallest amount of state needed to describe a Span's identity within a larger, potentially distributed trace, sufficient to propagate the context of a particular trace between processes.","path":"spec.md","position":16,"original_position":16,"commit_id":"0ca40e703a94bdec0d1681ebb60304ba0b98ceb3","original_commit_id":"0ca40e703a94bdec0d1681ebb60304ba0b98ceb3","user":{"login":"bensigelman","id":2251553,"avatar_url":"https://avatars.githubusercontent.com/u/2251553?v=3","gravatar_id":"","url":"https://api.github.com/users/bensigelman","html_url":"https://github.com/bensigelman","followers_url":"https://api.github.com/users/bensigelman/followers","following_url":"https://api.github.com/users/bensigelman/following{/other_user}","gists_url":"https://api.github.com/users/bensigelman/gists{/gist_id}","starred_url":"https://api.github.com/users/bensigelman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bensigelman/subscriptions","organizations_url":"https://api.github.com/users/bensigelman/orgs","repos_url":"https://api.github.com/users/bensigelman/repos","events_url":"https://api.github.com/users/bensigelman/events{/privacy}","received_events_url":"https://api.github.com/users/bensigelman/received_events","type":"User","site_admin":false},"body":"makes sense... I will reword.","created_at":"2016-01-15T05:22:31Z","updated_at":"2016-01-15T05:22:31Z","html_url":"https://github.com/opentracing/opentracing.github.io/pull/19#discussion_r49821907","pull_request_url":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/19","_links":{"self":{"href":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/comments/49821907"},"html":{"href":"https://github.com/opentracing/opentracing.github.io/pull/19#discussion_r49821907"},"pull_request":{"href":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/19"}}},"pull_request":{"url":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/19","id":55947000,"html_url":"https://github.com/opentracing/opentracing.github.io/pull/19","diff_url":"https://github.com/opentracing/opentracing.github.io/pull/19.diff","patch_url":"https://github.com/opentracing/opentracing.github.io/pull/19.patch","issue_url":"https://api.github.com/repos/opentracing/opentracing.github.io/issues/19","number":19,"state":"open","locked":false,"title":"language-independent semantics documentation","user":{"login":"bensigelman","id":2251553,"avatar_url":"https://avatars.githubusercontent.com/u/2251553?v=3","gravatar_id":"","url":"https://api.github.com/users/bensigelman","html_url":"https://github.com/bensigelman","followers_url":"https://api.github.com/users/bensigelman/followers","following_url":"https://api.github.com/users/bensigelman/following{/other_user}","gists_url":"https://api.github.com/users/bensigelman/gists{/gist_id}","starred_url":"https://api.github.com/users/bensigelman/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bensigelman/subscriptions","organizations_url":"https://api.github.com/users/bensigelman/orgs","repos_url":"https://api.github.com/users/bensigelman/repos","events_url":"https://api.github.com/users/bensigelman/events{/privacy}","received_events_url":"https://api.github.com/users/bensigelman/received_events","type":"User","site_admin":false},"body":"... and some other things.\r\n\r\nHighly recommend clicking this button: \r\n![image](https://cloud.githubusercontent.com/assets/2251553/12306010/707c2be6-b9ec-11e5-97eb-0d1218085bef.png)\r\n\r\nOpen to nits on presentation / organization... I would ask that concerns about the actual semantics themselves be opened as github issues proper, though.\r\n\r\nThanks!\r\n","created_at":"2016-01-13T19:55:46Z","updated_at":"2016-01-15T05:22:31Z","closed_at":null,"merged_at":null,"merge_commit_sha":"6046b79c8866d08217279a88e7faa328a3ddba1c","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/19/commits","review_comments_url":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/19/comments","review_comment_url":"https://api.github.com/repos/opentracing/opentracing.github.io/pulls/comments{/number}","comments_url":"https://api.github.com/repos/opentracing/opentracing.github.io/issues/19/comments","statuses_url":"https://api.github.com/repos/opentracing/opentracing.github.io/statuses/0ca40e703a94bdec0d1681ebb60304ba0b98ceb3","head":{"label":"opentracing:contributors_and_semantics","ref":"contributors_and_semantics","sha":"0ca40e703a94bdec0d1681ebb60304ba0b98ceb3","user":{"login":"opentracing","id":15482765,"avatar_url":"https://avatars.githubusercontent.com/u/15482765?v=3","gravatar_id":"","url":"https://api.github.com/users/opentracing","html_url":"https://github.com/opentracing","followers_url":"https://api.github.com/users/opentracing/followers","following_url":"https://api.github.com/users/opentracing/following{/other_user}","gists_url":"https://api.github.com/users/opentracing/gists{/gist_id}","starred_url":"https://api.github.com/users/opentracing/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/opentracing/subscriptions","organizations_url":"https://api.github.com/users/opentracing/orgs","repos_url":"https://api.github.com/users/opentracing/repos","events_url":"https://api.github.com/users/opentracing/events{/privacy}","received_events_url":"https://api.github.com/users/opentracing/received_events","type":"Organization","site_admin":false},"repo":{"id":48717396,"name":"opentracing.github.io","full_name":"opentracing/opentracing.github.io","owner":{"login":"opentracing","id":15482765,"avatar_url":"https://avatars.githubusercontent.com/u/15482765?v=3","gravatar_id":"","url":"https://api.github.com/users/opentracing","html_url":"https://github.com/opentracing","followers_url":"https://api.github.com/users/opentracing/followers","following_url":"https://api.github.com/users/opentracing/following{/other_user}","gists_url":"https://api.github.com/users/opentracing/gists{/gist_id}","starred_url":"https://api.github.com/users/opentracing/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/opentracing/subscriptions","organizations_url":"https://api.github.com/users/opentracing/orgs","repos_url":"https://api.github.com/users/opentracing/repos","events_url":"https://api.github.com/users/opentracing/events{/privacy}","received_events_url":"https://api.github.com/users/opentracing/received_events","type":"Organization","site_admin":false},"private":false,"html_url":"https://github.com/opentracing/opentracing.github.io","description":"Source 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