{"action":"created","issue":{"url":"https://api.github.com/repos/h2oai/datatable/issues/1077","repository_url":"https://api.github.com/repos/h2oai/datatable","labels_url":"https://api.github.com/repos/h2oai/datatable/issues/1077/labels{/name}","comments_url":"https://api.github.com/repos/h2oai/datatable/issues/1077/comments","events_url":"https://api.github.com/repos/h2oai/datatable/issues/1077/events","html_url":"https://github.com/h2oai/datatable/issues/1077","id":328637682,"node_id":"MDU6SXNzdWUzMjg2Mzc2ODI=","number":1077,"title":"Aggregator in datatable","user":{"login":"lelandwilkinson","id":19478753,"node_id":"MDQ6VXNlcjE5NDc4NzUz","avatar_url":"https://avatars1.githubusercontent.com/u/19478753?v=4","gravatar_id":"","url":"https://api.github.com/users/lelandwilkinson","html_url":"https://github.com/lelandwilkinson","followers_url":"https://api.github.com/users/lelandwilkinson/followers","following_url":"https://api.github.com/users/lelandwilkinson/following{/other_user}","gists_url":"https://api.github.com/users/lelandwilkinson/gists{/gist_id}","starred_url":"https://api.github.com/users/lelandwilkinson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lelandwilkinson/subscriptions","organizations_url":"https://api.github.com/users/lelandwilkinson/orgs","repos_url":"https://api.github.com/users/lelandwilkinson/repos","events_url":"https://api.github.com/users/lelandwilkinson/events{/privacy}","received_events_url":"https://api.github.com/users/lelandwilkinson/received_events","type":"User","site_admin":false},"labels":[{"id":552010634,"node_id":"MDU6TGFiZWw1NTIwMTA2MzQ=","url":"https://api.github.com/repos/h2oai/datatable/labels/improve","name":"improve","color":"0e8a16","default":false}],"state":"open","locked":false,"assignee":{"login":"oleksiyskononenko","id":35204136,"node_id":"MDQ6VXNlcjM1MjA0MTM2","avatar_url":"https://avatars3.githubusercontent.com/u/35204136?v=4","gravatar_id":"","url":"https://api.github.com/users/oleksiyskononenko","html_url":"https://github.com/oleksiyskononenko","followers_url":"https://api.github.com/users/oleksiyskononenko/followers","following_url":"https://api.github.com/users/oleksiyskononenko/following{/other_user}","gists_url":"https://api.github.com/users/oleksiyskononenko/gists{/gist_id}","starred_url":"https://api.github.com/users/oleksiyskononenko/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/oleksiyskononenko/subscriptions","organizations_url":"https://api.github.com/users/oleksiyskononenko/orgs","repos_url":"https://api.github.com/users/oleksiyskononenko/repos","events_url":"https://api.github.com/users/oleksiyskononenko/events{/privacy}","received_events_url":"https://api.github.com/users/oleksiyskononenko/received_events","type":"User","site_admin":false},"assignees":[{"login":"oleksiyskononenko","id":35204136,"node_id":"MDQ6VXNlcjM1MjA0MTM2","avatar_url":"https://avatars3.githubusercontent.com/u/35204136?v=4","gravatar_id":"","url":"https://api.github.com/users/oleksiyskononenko","html_url":"https://github.com/oleksiyskononenko","followers_url":"https://api.github.com/users/oleksiyskononenko/followers","following_url":"https://api.github.com/users/oleksiyskononenko/following{/other_user}","gists_url":"https://api.github.com/users/oleksiyskononenko/gists{/gist_id}","starred_url":"https://api.github.com/users/oleksiyskononenko/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/oleksiyskononenko/subscriptions","organizations_url":"https://api.github.com/users/oleksiyskononenko/orgs","repos_url":"https://api.github.com/users/oleksiyskononenko/repos","events_url":"https://api.github.com/users/oleksiyskononenko/events{/privacy}","received_events_url":"https://api.github.com/users/oleksiyskononenko/received_events","type":"User","site_admin":false}],"milestone":null,"comments":24,"created_at":"2018-06-01T19:41:06Z","updated_at":"2018-06-21T16:14:50Z","closed_at":null,"author_association":"NONE","body":"- Is there something datatable can't do just yet, but you think it'd be nice if it did?\r\nAggregate\r\n\r\n- Is it related to some problem you're trying to solve?\r\nSolve slow reading of NFF format files.\r\n\r\n- What do you think the API for your feature should be?\r\n See API in the Java code. Methods required are in base class DataSource\r\n\r\nSee Java code in https://github.com/h2oai/vis-data-server/blob/master/library/src/main/java/com/h2o/data/Aggregator.java\r\n\r\nPlus other classes in that package for support. All of this should be done in C++\r\n"},"comment":{"url":"https://api.github.com/repos/h2oai/datatable/issues/comments/399160187","html_url":"https://github.com/h2oai/datatable/issues/1077#issuecomment-399160187","issue_url":"https://api.github.com/repos/h2oai/datatable/issues/1077","id":399160187,"node_id":"MDEyOklzc3VlQ29tbWVudDM5OTE2MDE4Nw==","user":{"login":"lelandwilkinson","id":19478753,"node_id":"MDQ6VXNlcjE5NDc4NzUz","avatar_url":"https://avatars1.githubusercontent.com/u/19478753?v=4","gravatar_id":"","url":"https://api.github.com/users/lelandwilkinson","html_url":"https://github.com/lelandwilkinson","followers_url":"https://api.github.com/users/lelandwilkinson/followers","following_url":"https://api.github.com/users/lelandwilkinson/following{/other_user}","gists_url":"https://api.github.com/users/lelandwilkinson/gists{/gist_id}","starred_url":"https://api.github.com/users/lelandwilkinson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lelandwilkinson/subscriptions","organizations_url":"https://api.github.com/users/lelandwilkinson/orgs","repos_url":"https://api.github.com/users/lelandwilkinson/repos","events_url":"https://api.github.com/users/lelandwilkinson/events{/privacy}","received_events_url":"https://api.github.com/users/lelandwilkinson/received_events","type":"User","site_admin":false},"created_at":"2018-06-21T16:14:50Z","updated_at":"2018-06-21T16:14:50Z","author_association":"NONE","body":"One more thing:\r\nThe datatable aggregator will add an extra column at the end, with a \"counts\" label. The entries in this column will be positive long integers represented in Strings. The \"counts\" label will be added to the list in record1 and a \"real\" type will be added to the end of record2."}}
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