{"action":"opened","issue":{"url":"https://api.github.com/repos/apache/incubator-fluo/issues/759","repository_url":"https://api.github.com/repos/apache/incubator-fluo","labels_url":"https://api.github.com/repos/apache/incubator-fluo/issues/759/labels{/name}","comments_url":"https://api.github.com/repos/apache/incubator-fluo/issues/759/comments","events_url":"https://api.github.com/repos/apache/incubator-fluo/issues/759/events","html_url":"https://github.com/apache/incubator-fluo/issues/759","id":170662476,"number":759,"title":"Add scanner over multiple Spans","user":{"login":"keith-turner","id":1268739,"avatar_url":"https://avatars.githubusercontent.com/u/1268739?v=3","gravatar_id":"","url":"https://api.github.com/users/keith-turner","html_url":"https://github.com/keith-turner","followers_url":"https://api.github.com/users/keith-turner/followers","following_url":"https://api.github.com/users/keith-turner/following{/other_user}","gists_url":"https://api.github.com/users/keith-turner/gists{/gist_id}","starred_url":"https://api.github.com/users/keith-turner/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/keith-turner/subscriptions","organizations_url":"https://api.github.com/users/keith-turner/orgs","repos_url":"https://api.github.com/users/keith-turner/repos","events_url":"https://api.github.com/users/keith-turner/events{/privacy}","received_events_url":"https://api.github.com/users/keith-turner/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-08-11T14:40:43Z","updated_at":"2016-08-11T14:40:43Z","closed_at":null,"body":"The original intent of #626 was to support fetching multiple Spans. This was not done because the result may not fit into memory.  At the time when #626 was worked on the Scanner API was in a bad state.  After the scanner the scanner API improvements in #639, it would be relatively easy to add multiple spans to the API.  Could support something like the following.\r\n\r\n```java\r\nSnapshot snap = ...\r\nsnap.scanner().over(span1, span2, span3).build();\r\n\r\nCollection<Span> spans = ...\r\nsnap.scanner().over(spans).fetch(col1, col2).build()\r\n```\r\n\r\nMultiple spans may result in out of order key iteration."}}
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