{"action":"opened","issue":{"url":"https://api.github.com/repos/druid-io/druid/issues/1836","labels_url":"https://api.github.com/repos/druid-io/druid/issues/1836/labels{/name}","comments_url":"https://api.github.com/repos/druid-io/druid/issues/1836/comments","events_url":"https://api.github.com/repos/druid-io/druid/issues/1836/events","html_url":"https://github.com/druid-io/druid/issues/1836","id":112052833,"number":1836,"title":"MapCache needs re-written","user":{"login":"drcrallen","id":8213081,"avatar_url":"https://avatars.githubusercontent.com/u/8213081?v=3","gravatar_id":"","url":"https://api.github.com/users/drcrallen","html_url":"https://github.com/drcrallen","followers_url":"https://api.github.com/users/drcrallen/followers","following_url":"https://api.github.com/users/drcrallen/following{/other_user}","gists_url":"https://api.github.com/users/drcrallen/gists{/gist_id}","starred_url":"https://api.github.com/users/drcrallen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drcrallen/subscriptions","organizations_url":"https://api.github.com/users/drcrallen/orgs","repos_url":"https://api.github.com/users/drcrallen/repos","events_url":"https://api.github.com/users/drcrallen/events{/privacy}","received_events_url":"https://api.github.com/users/drcrallen/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-10-19T00:24:27Z","updated_at":"2015-10-19T00:24:27Z","closed_at":null,"body":"Under very heavy contention, MapCache has really screwy locking which can cause issues in which result gets returned.\r\n\r\nI also know some devs have looked at some things to replace LRU with in order to prevent large scans from clobbering cache.\r\n\r\nThis ask is to have a better MapCache implementation that can handle high concurrency better."}}