{"action":"opened","issue":{"url":"https://api.github.com/repos/pingcap/tikv/issues/3188","repository_url":"https://api.github.com/repos/pingcap/tikv","labels_url":"https://api.github.com/repos/pingcap/tikv/issues/3188/labels{/name}","comments_url":"https://api.github.com/repos/pingcap/tikv/issues/3188/comments","events_url":"https://api.github.com/repos/pingcap/tikv/issues/3188/events","html_url":"https://github.com/pingcap/tikv/issues/3188","id":331117300,"node_id":"MDU6SXNzdWUzMzExMTczMDA=","number":3188,"title":"Scale-out tikv node but the disk space used by tikv is not balanced","user":{"login":"denghuancong","id":1788022,"node_id":"MDQ6VXNlcjE3ODgwMjI=","avatar_url":"https://avatars0.githubusercontent.com/u/1788022?v=4","gravatar_id":"","url":"https://api.github.com/users/denghuancong","html_url":"https://github.com/denghuancong","followers_url":"https://api.github.com/users/denghuancong/followers","following_url":"https://api.github.com/users/denghuancong/following{/other_user}","gists_url":"https://api.github.com/users/denghuancong/gists{/gist_id}","starred_url":"https://api.github.com/users/denghuancong/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/denghuancong/subscriptions","organizations_url":"https://api.github.com/users/denghuancong/orgs","repos_url":"https://api.github.com/users/denghuancong/repos","events_url":"https://api.github.com/users/denghuancong/events{/privacy}","received_events_url":"https://api.github.com/users/denghuancong/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-06-11T09:46:07Z","updated_at":"2018-06-11T09:46:07Z","closed_at":null,"author_association":"NONE","body":"> base info：\r\ntikv : v2.0.1\r\ntree tikv nodes in tree physical machine\r\n\r\nwe use 'du -sh db-path' to calcuate the disk space of the tikv node using. \r\nbefore we scale out one tikv node , the three tikv node a,b,c 's disk space used is 7.1g, 8.2g, 7.9g , and we print out the region size is the following:\r\n```\r\n\"region_size\": 12061,\r\n\"region_size\": 12061,\r\n\"region_size\": 12061,\r\n```\r\n\r\nafter we scale out another tikv node , it trigger the pd server to manage balancing of the four nodes，the disk space used of four tikv nodes is 4.1g，8.7g，6.9g，4.8g（the new one），it seem not balance.\r\nand we print out the region size : \r\n```\r\n \"region_size\": 8406,\r\n\"region_size\": 8484,\r\n\"region_size\": 8032,\r\n\"region_size\": 7802,\r\n```"}}
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