{"action":"created","issue":{"url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/issues/42","repository_url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap","labels_url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/issues/42/labels{/name}","comments_url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/issues/42/comments","events_url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/issues/42/events","html_url":"https://github.com/RoaringBitmap/RoaringBitmap/issues/42","id":102377504,"number":42,"title":"Parallelize","user":{"login":"lemire","id":391987,"avatar_url":"https://avatars3.githubusercontent.com/u/391987?v=4","gravatar_id":"","url":"https://api.github.com/users/lemire","html_url":"https://github.com/lemire","followers_url":"https://api.github.com/users/lemire/followers","following_url":"https://api.github.com/users/lemire/following{/other_user}","gists_url":"https://api.github.com/users/lemire/gists{/gist_id}","starred_url":"https://api.github.com/users/lemire/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lemire/subscriptions","organizations_url":"https://api.github.com/users/lemire/orgs","repos_url":"https://api.github.com/users/lemire/repos","events_url":"https://api.github.com/users/lemire/events{/privacy}","received_events_url":"https://api.github.com/users/lemire/received_events","type":"User","site_admin":false},"labels":[{"id":269563702,"url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/labels/JDK8","name":"JDK8","color":"fef2c0","default":false},{"id":43807799,"url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/labels/enhancement","name":"enhancement","color":"84b6eb","default":true},{"id":266861836,"url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/labels/help%20wanted","name":"help wanted","color":"009800","default":true},{"id":194719902,"url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/labels/performance","name":"performance","color":"5319e7","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":14,"created_at":"2015-08-21T13:12:05Z","updated_at":"2018-02-02T20:17:05Z","closed_at":null,"author_association":"OWNER","body":"Roaring is ideally suited for parallel execution, as all containers can be operated upon in distinct threads.\n"},"comment":{"url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/issues/comments/362694972","html_url":"https://github.com/RoaringBitmap/RoaringBitmap/issues/42#issuecomment-362694972","issue_url":"https://api.github.com/repos/RoaringBitmap/RoaringBitmap/issues/42","id":362694972,"user":{"login":"richardstartin","id":16439049,"avatar_url":"https://avatars3.githubusercontent.com/u/16439049?v=4","gravatar_id":"","url":"https://api.github.com/users/richardstartin","html_url":"https://github.com/richardstartin","followers_url":"https://api.github.com/users/richardstartin/followers","following_url":"https://api.github.com/users/richardstartin/following{/other_user}","gists_url":"https://api.github.com/users/richardstartin/gists{/gist_id}","starred_url":"https://api.github.com/users/richardstartin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/richardstartin/subscriptions","organizations_url":"https://api.github.com/users/richardstartin/orgs","repos_url":"https://api.github.com/users/richardstartin/repos","events_url":"https://api.github.com/users/richardstartin/events{/privacy}","received_events_url":"https://api.github.com/users/richardstartin/received_events","type":"User","site_admin":false},"created_at":"2018-02-02T20:17:05Z","updated_at":"2018-02-02T20:17:05Z","author_association":"CONTRIBUTOR","body":"I did some quick benchmarking. I don't think the approach I have put forward is good - the cost of the rotation massively outweighs the actual aggregation, though the aggregation itself is fast. It's possible that better data structures would improve rotation performance, but I think it's a losing battle. On the other hand, if you were instead using the transposed form of the bitmaps you wanted to aggregate, you could enjoy this kind of parallelism for free."}}
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