{"action":"opened","issue":{"url":"https://api.github.com/repos/atlanmod/Mogwai/issues/17","repository_url":"https://api.github.com/repos/atlanmod/Mogwai","labels_url":"https://api.github.com/repos/atlanmod/Mogwai/issues/17/labels{/name}","comments_url":"https://api.github.com/repos/atlanmod/Mogwai/issues/17/comments","events_url":"https://api.github.com/repos/atlanmod/Mogwai/issues/17/events","html_url":"https://github.com/atlanmod/Mogwai/issues/17","id":179113705,"number":17,"title":"New vs. old collect() translation","user":{"login":"gdaniel","id":6516281,"avatar_url":"https://avatars.githubusercontent.com/u/6516281?v=3","gravatar_id":"","url":"https://api.github.com/users/gdaniel","html_url":"https://github.com/gdaniel","followers_url":"https://api.github.com/users/gdaniel/followers","following_url":"https://api.github.com/users/gdaniel/following{/other_user}","gists_url":"https://api.github.com/users/gdaniel/gists{/gist_id}","starred_url":"https://api.github.com/users/gdaniel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gdaniel/subscriptions","organizations_url":"https://api.github.com/users/gdaniel/orgs","repos_url":"https://api.github.com/users/gdaniel/repos","events_url":"https://api.github.com/users/gdaniel/events{/privacy}","received_events_url":"https://api.github.com/users/gdaniel/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/atlanmod/Mogwai/labels/question","name":"question","color":"cc317c"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-09-25T22:41:53Z","updated_at":"2016-09-25T22:41:53Z","closed_at":null,"body":"The new collect() translation is more flexible and allows to define iterator variables. However, the gather/scatter pattern may be quite heavy, especially if the query contains several nested collects.\r\n\r\nNeed to perform some benchmarking to see if there is a translation better than the other. If it is the case it would be possible to have two kinds of translations: a simple one (outE/inV) if the collect iterator is never accessed, and a complex one (gather/scatter or similar) if the iterator is used in a nested operation.\r\n\r\nThis question comes from the discussion with @bluezio about Mogwaï performance compared to Hawk/Neo4j and Hawk/OrientDB"}}
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