{"action":"created","issue":{"url":"https://api.github.com/repos/apache/spark/issues/23243","repository_url":"https://api.github.com/repos/apache/spark","labels_url":"https://api.github.com/repos/apache/spark/issues/23243/labels{/name}","comments_url":"https://api.github.com/repos/apache/spark/issues/23243/comments","events_url":"https://api.github.com/repos/apache/spark/issues/23243/events","html_url":"https://github.com/apache/spark/pull/23243","id":388081069,"node_id":"MDExOlB1bGxSZXF1ZXN0MjM2NDI2NDg2","number":23243,"title":"[SPARK-26288][CORE]add initRegisteredExecutorsDB","user":{"login":"weixiuli","id":39684231,"node_id":"MDQ6VXNlcjM5Njg0MjMx","avatar_url":"https://avatars3.githubusercontent.com/u/39684231?v=4","gravatar_id":"","url":"https://api.github.com/users/weixiuli","html_url":"https://github.com/weixiuli","followers_url":"https://api.github.com/users/weixiuli/followers","following_url":"https://api.github.com/users/weixiuli/following{/other_user}","gists_url":"https://api.github.com/users/weixiuli/gists{/gist_id}","starred_url":"https://api.github.com/users/weixiuli/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/weixiuli/subscriptions","organizations_url":"https://api.github.com/users/weixiuli/orgs","repos_url":"https://api.github.com/users/weixiuli/repos","events_url":"https://api.github.com/users/weixiuli/events{/privacy}","received_events_url":"https://api.github.com/users/weixiuli/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":13,"created_at":"2018-12-06T06:57:39Z","updated_at":"2018-12-18T16:18:43Z","closed_at":null,"author_association":"NONE","pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/23243","html_url":"https://github.com/apache/spark/pull/23243","diff_url":"https://github.com/apache/spark/pull/23243.diff","patch_url":"https://github.com/apache/spark/pull/23243.patch"},"body":"## What changes were proposed in this pull request?\r\nAs we all know that  spark on Yarn uses  DB to record RegisteredExecutors information which  can  be reloaded  and  used  again  when the ExternalShuffleService is restarted . \r\n\r\nThe RegisteredExecutors information can't be recorded  both in the mode of spark's standalone and  spark on k8s , which will cause the  RegisteredExecutors information to be lost ,when the ExternalShuffleService is restarted.\r\n\r\nTo solve the problem above, a method  is proposed and is committed .\r\n\r\n## How was this patch tested?\r\n\r\nnew unit tests\r\n\r\n(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)\r\n(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)\r\n\r\nPlease review http://spark.apache.org/contributing.html before opening a pull request.\r\n"},"comment":{"url":"https://api.github.com/repos/apache/spark/issues/comments/448278147","html_url":"https://github.com/apache/spark/pull/23243#issuecomment-448278147","issue_url":"https://api.github.com/repos/apache/spark/issues/23243","id":448278147,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0ODI3ODE0Nw==","user":{"login":"AmplabJenkins","id":4031291,"node_id":"MDQ6VXNlcjQwMzEyOTE=","avatar_url":"https://avatars3.githubusercontent.com/u/4031291?v=4","gravatar_id":"","url":"https://api.github.com/users/AmplabJenkins","html_url":"https://github.com/AmplabJenkins","followers_url":"https://api.github.com/users/AmplabJenkins/followers","following_url":"https://api.github.com/users/AmplabJenkins/following{/other_user}","gists_url":"https://api.github.com/users/AmplabJenkins/gists{/gist_id}","starred_url":"https://api.github.com/users/AmplabJenkins/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AmplabJenkins/subscriptions","organizations_url":"https://api.github.com/users/AmplabJenkins/orgs","repos_url":"https://api.github.com/users/AmplabJenkins/repos","events_url":"https://api.github.com/users/AmplabJenkins/events{/privacy}","received_events_url":"https://api.github.com/users/AmplabJenkins/received_events","type":"User","site_admin":false},"created_at":"2018-12-18T16:18:43Z","updated_at":"2018-12-18T16:18:43Z","author_association":"NONE","body":"Merged build finished. Test PASSed."}}
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