{"action":"created","issue":{"url":"https://api.github.com/repos/weaveworks/cortex/issues/464","repository_url":"https://api.github.com/repos/weaveworks/cortex","labels_url":"https://api.github.com/repos/weaveworks/cortex/issues/464/labels{/name}","comments_url":"https://api.github.com/repos/weaveworks/cortex/issues/464/comments","events_url":"https://api.github.com/repos/weaveworks/cortex/issues/464/events","html_url":"https://github.com/weaveworks/cortex/issues/464","id":236840184,"number":464,"title":"Dynamic period table capacity adjustment","user":{"login":"awh","id":1504438,"avatar_url":"https://avatars1.githubusercontent.com/u/1504438?v=4","gravatar_id":"","url":"https://api.github.com/users/awh","html_url":"https://github.com/awh","followers_url":"https://api.github.com/users/awh/followers","following_url":"https://api.github.com/users/awh/following{/other_user}","gists_url":"https://api.github.com/users/awh/gists{/gist_id}","starred_url":"https://api.github.com/users/awh/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/awh/subscriptions","organizations_url":"https://api.github.com/users/awh/orgs","repos_url":"https://api.github.com/users/awh/repos","events_url":"https://api.github.com/users/awh/events{/privacy}","received_events_url":"https://api.github.com/users/awh/received_events","type":"User","site_admin":false},"labels":[{"id":439590185,"url":"https://api.github.com/repos/weaveworks/cortex/labels/feature","name":"feature","color":"0e8a16","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2017-06-19T10:04:44Z","updated_at":"2018-02-05T10:45:29Z","closed_at":null,"author_association":"OWNER","body":"During the period from midnight to midnight + max chunk age, newly matured chunks require 2x the number of index entries to be written to the period tables because their contents span two day buckets. Provisioned capacity must be sized to cope with this nightly spike or the series flush queues start to back up:\r\n\r\n![screenshot from 2017-06-19 10-56-08](https://user-images.githubusercontent.com/1504438/27280132-c5bd506a-54de-11e7-84a8-0efc61557678.png)\r\n![screenshot from 2017-06-19 10-56-31](https://user-images.githubusercontent.com/1504438/27280139-cbc3becc-54de-11e7-849f-28789d482dda.png)\r\n\r\nHowever, doing so means that capacity is over-provisioned for the noon to midnight period. The table manager can be enhanced to step the capacity up automatically before midnight, and back down again after noon.\r\n"},"comment":{"url":"https://api.github.com/repos/weaveworks/cortex/issues/comments/363047730","html_url":"https://github.com/weaveworks/cortex/issues/464#issuecomment-363047730","issue_url":"https://api.github.com/repos/weaveworks/cortex/issues/464","id":363047730,"user":{"login":"bboreham","id":8125524,"avatar_url":"https://avatars2.githubusercontent.com/u/8125524?v=4","gravatar_id":"","url":"https://api.github.com/users/bboreham","html_url":"https://github.com/bboreham","followers_url":"https://api.github.com/users/bboreham/followers","following_url":"https://api.github.com/users/bboreham/following{/other_user}","gists_url":"https://api.github.com/users/bboreham/gists{/gist_id}","starred_url":"https://api.github.com/users/bboreham/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bboreham/subscriptions","organizations_url":"https://api.github.com/users/bboreham/orgs","repos_url":"https://api.github.com/users/bboreham/repos","events_url":"https://api.github.com/users/bboreham/events{/privacy}","received_events_url":"https://api.github.com/users/bboreham/received_events","type":"User","site_admin":false},"created_at":"2018-02-05T10:45:29Z","updated_at":"2018-02-05T10:45:29Z","author_association":"OWNER","body":"Do we still need this issue now autoscaling is supported?"}}
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