{"action":"created","issue":{"url":"https://api.github.com/repos/prestodb/presto/issues/10854","repository_url":"https://api.github.com/repos/prestodb/presto","labels_url":"https://api.github.com/repos/prestodb/presto/issues/10854/labels{/name}","comments_url":"https://api.github.com/repos/prestodb/presto/issues/10854/comments","events_url":"https://api.github.com/repos/prestodb/presto/issues/10854/events","html_url":"https://github.com/prestodb/presto/pull/10854","id":333128481,"node_id":"MDExOlB1bGxSZXF1ZXN0MTk1NDE4NTg5","number":10854,"title":"Optimize GroupByHash over RLE page","user":{"login":"wenleix","id":799346,"node_id":"MDQ6VXNlcjc5OTM0Ng==","avatar_url":"https://avatars1.githubusercontent.com/u/799346?v=4","gravatar_id":"","url":"https://api.github.com/users/wenleix","html_url":"https://github.com/wenleix","followers_url":"https://api.github.com/users/wenleix/followers","following_url":"https://api.github.com/users/wenleix/following{/other_user}","gists_url":"https://api.github.com/users/wenleix/gists{/gist_id}","starred_url":"https://api.github.com/users/wenleix/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wenleix/subscriptions","organizations_url":"https://api.github.com/users/wenleix/orgs","repos_url":"https://api.github.com/users/wenleix/repos","events_url":"https://api.github.com/users/wenleix/events{/privacy}","received_events_url":"https://api.github.com/users/wenleix/received_events","type":"User","site_admin":false},"labels":[{"id":196992743,"node_id":"MDU6TGFiZWwxOTY5OTI3NDM=","url":"https://api.github.com/repos/prestodb/presto/labels/CLA%20Signed","name":"CLA Signed","color":"ededed","default":false}],"state":"open","locked":false,"assignee":{"login":"dain","id":58298,"node_id":"MDQ6VXNlcjU4Mjk4","avatar_url":"https://avatars0.githubusercontent.com/u/58298?v=4","gravatar_id":"","url":"https://api.github.com/users/dain","html_url":"https://github.com/dain","followers_url":"https://api.github.com/users/dain/followers","following_url":"https://api.github.com/users/dain/following{/other_user}","gists_url":"https://api.github.com/users/dain/gists{/gist_id}","starred_url":"https://api.github.com/users/dain/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dain/subscriptions","organizations_url":"https://api.github.com/users/dain/orgs","repos_url":"https://api.github.com/users/dain/repos","events_url":"https://api.github.com/users/dain/events{/privacy}","received_events_url":"https://api.github.com/users/dain/received_events","type":"User","site_admin":false},"assignees":[{"login":"dain","id":58298,"node_id":"MDQ6VXNlcjU4Mjk4","avatar_url":"https://avatars0.githubusercontent.com/u/58298?v=4","gravatar_id":"","url":"https://api.github.com/users/dain","html_url":"https://github.com/dain","followers_url":"https://api.github.com/users/dain/followers","following_url":"https://api.github.com/users/dain/following{/other_user}","gists_url":"https://api.github.com/users/dain/gists{/gist_id}","starred_url":"https://api.github.com/users/dain/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dain/subscriptions","organizations_url":"https://api.github.com/users/dain/orgs","repos_url":"https://api.github.com/users/dain/repos","events_url":"https://api.github.com/users/dain/events{/privacy}","received_events_url":"https://api.github.com/users/dain/received_events","type":"User","site_admin":false}],"milestone":null,"comments":0,"created_at":"2018-06-18T04:17:32Z","updated_at":"2018-06-18T04:20:16Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/prestodb/presto/pulls/10854","html_url":"https://github.com/prestodb/presto/pull/10854","diff_url":"https://github.com/prestodb/presto/pull/10854.diff","patch_url":"https://github.com/prestodb/presto/pull/10854.patch"},"body":"HivePageSink leverages GroupByHash to get the writer index. However,\r\nthis will causes calculating hash code and equality per each row even\r\nfor queries writing into static partition."},"comment":{"url":"https://api.github.com/repos/prestodb/presto/issues/comments/397938301","html_url":"https://github.com/prestodb/presto/pull/10854#issuecomment-397938301","issue_url":"https://api.github.com/repos/prestodb/presto/issues/10854","id":397938301,"node_id":"MDEyOklzc3VlQ29tbWVudDM5NzkzODMwMQ==","user":{"login":"wenleix","id":799346,"node_id":"MDQ6VXNlcjc5OTM0Ng==","avatar_url":"https://avatars1.githubusercontent.com/u/799346?v=4","gravatar_id":"","url":"https://api.github.com/users/wenleix","html_url":"https://github.com/wenleix","followers_url":"https://api.github.com/users/wenleix/followers","following_url":"https://api.github.com/users/wenleix/following{/other_user}","gists_url":"https://api.github.com/users/wenleix/gists{/gist_id}","starred_url":"https://api.github.com/users/wenleix/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wenleix/subscriptions","organizations_url":"https://api.github.com/users/wenleix/orgs","repos_url":"https://api.github.com/users/wenleix/repos","events_url":"https://api.github.com/users/wenleix/events{/privacy}","received_events_url":"https://api.github.com/users/wenleix/received_events","type":"User","site_admin":false},"created_at":"2018-06-18T04:20:16Z","updated_at":"2018-06-18T04:20:16Z","author_association":"CONTRIBUTOR","body":"Here is the flamechart that motivates this optimization. \r\n\r\n<img width=\"1202\" alt=\"screen shot 2018-06-17 at 21 11 17\" src=\"https://user-images.githubusercontent.com/799346/41517989-33a5a0ce-7274-11e8-8942-7927b7cad3dd.png\">\r\n"}}
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