{"comment":{"url":"https://api.github.com/repos/dain/presto/comments/15627801","html_url":"https://github.com/dain/presto/commit/926db96e83609b00544ecad68430334d6388d418#commitcomment-15627801","id":15627801,"user":{"login":"martint","id":14387,"avatar_url":"https://avatars.githubusercontent.com/u/14387?v=3","gravatar_id":"","url":"https://api.github.com/users/martint","html_url":"https://github.com/martint","followers_url":"https://api.github.com/users/martint/followers","following_url":"https://api.github.com/users/martint/following{/other_user}","gists_url":"https://api.github.com/users/martint/gists{/gist_id}","starred_url":"https://api.github.com/users/martint/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/martint/subscriptions","organizations_url":"https://api.github.com/users/martint/orgs","repos_url":"https://api.github.com/users/martint/repos","events_url":"https://api.github.com/users/martint/events{/privacy}","received_events_url":"https://api.github.com/users/martint/received_events","type":"User","site_admin":false},"position":122,"line":518,"path":"presto-main/src/main/java/com/facebook/presto/sql/planner/optimizations/PropertyDerivations.java","commit_id":"926db96e83609b00544ecad68430334d6388d418","created_at":"2016-01-23T03:43:30Z","updated_at":"2016-01-23T03:43:30Z","body":"I don't understand this. Does it have a side effect? If so, it's not obvious."}}