{"action":"created","issue":{"url":"https://api.github.com/repos/cms-sw/cmssw/issues/17098","repository_url":"https://api.github.com/repos/cms-sw/cmssw","labels_url":"https://api.github.com/repos/cms-sw/cmssw/issues/17098/labels{/name}","comments_url":"https://api.github.com/repos/cms-sw/cmssw/issues/17098/comments","events_url":"https://api.github.com/repos/cms-sw/cmssw/issues/17098/events","html_url":"https://github.com/cms-sw/cmssw/pull/17098","id":197411388,"number":17098,"title":"Remove Trajectory from 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CMSSW_9_0_X","description":null,"creator":{"login":"smuzaffar","id":4115138,"avatar_url":"https://avatars.githubusercontent.com/u/4115138?v=3","gravatar_id":"","url":"https://api.github.com/users/smuzaffar","html_url":"https://github.com/smuzaffar","followers_url":"https://api.github.com/users/smuzaffar/followers","following_url":"https://api.github.com/users/smuzaffar/following{/other_user}","gists_url":"https://api.github.com/users/smuzaffar/gists{/gist_id}","starred_url":"https://api.github.com/users/smuzaffar/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/smuzaffar/subscriptions","organizations_url":"https://api.github.com/users/smuzaffar/orgs","repos_url":"https://api.github.com/users/smuzaffar/repos","events_url":"https://api.github.com/users/smuzaffar/events{/privacy}","received_events_url":"https://api.github.com/users/smuzaffar/received_events","type":"User","site_admin":false},"open_issues":76,"closed_issues":453,"state":"open","created_at":"2016-11-16T08:55:18Z","updated_at":"2017-01-30T08:55:45Z","due_on":null,"closed_at":null},"comments":130,"created_at":"2016-12-23T18:33:10Z","updated_at":"2017-01-30T09:05:19Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/cms-sw/cmssw/pulls/17098","html_url":"https://github.com/cms-sw/cmssw/pull/17098","diff_url":"https://github.com/cms-sw/cmssw/pull/17098.diff","patch_url":"https://github.com/cms-sw/cmssw/pull/17098.patch"},"body":"for detail see https://its.cern.ch/jira/browse/CMSTRACK-150\r\n(please use Jira for general discussion)\r\n\r\nminor regression expected due to rounding\r\n\r\nPixel DQM is broken. will be discussed with Tracker DPG and experts\r\nUntested/Private WFs may be broken as well.\r\n\r\nA general customizer that will switch \"save Trajectory in the Event\" on for all affected producers in the process is provided\r\n\r\nNB\r\nplease note that this PR is composed of three components:\r\n1) do not store Trajectories in the Event\r\n  This saves memory and a bit of time\r\n2) migrate reco algorithms to not use Trajectories and use an upgraded TrackExtra instead\r\n  can produce minor regression due to rounding\r\n3) migrate or protect DQM and Validation analyzers not to use Trajectories\r\n   The most affected one is DQM for Pixel for Phase0. PhaseI will be easier to migrate still residuals cannot be computed as it stands (caveat: pulls are computed and stored in TrackExtra since ages)\r\n\r\nPIxel DQM is now working using ad-hoc Refit Track"},"comment":{"url":"https://api.github.com/repos/cms-sw/cmssw/issues/comments/276010294","html_url":"https://github.com/cms-sw/cmssw/pull/17098#issuecomment-276010294","issue_url":"https://api.github.com/repos/cms-sw/cmssw/issues/17098","id":276010294,"user":{"login":"VinInn","id":4143702,"avatar_url":"https://avatars.githubusercontent.com/u/4143702?v=3","gravatar_id":"","url":"https://api.github.com/users/VinInn","html_url":"https://github.com/VinInn","followers_url":"https://api.github.com/users/VinInn/followers","following_url":"https://api.github.com/users/VinInn/following{/other_user}","gists_url":"https://api.github.com/users/VinInn/gists{/gist_id}","starred_url":"https://api.github.com/users/VinInn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/VinInn/subscriptions","organizations_url":"https://api.github.com/users/VinInn/orgs","repos_url":"https://api.github.com/users/VinInn/repos","events_url":"https://api.github.com/users/VinInn/events{/privacy}","received_events_url":"https://api.github.com/users/VinInn/received_events","type":"User","site_admin":false},"created_at":"2017-01-30T09:05:19Z","updated_at":"2017-01-30T09:05:19Z","body":"@cmsbuild , please test"}}
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