{"action":"created","issue":{"url":"https://api.github.com/repos/apache/carbondata/issues/2314","repository_url":"https://api.github.com/repos/apache/carbondata","labels_url":"https://api.github.com/repos/apache/carbondata/issues/2314/labels{/name}","comments_url":"https://api.github.com/repos/apache/carbondata/issues/2314/comments","events_url":"https://api.github.com/repos/apache/carbondata/issues/2314/events","html_url":"https://github.com/apache/carbondata/pull/2314","id":323998489,"number":2314,"title":"[CARBONDATA-2309][DataLoad] Add strategy to generate bigger carbondata files in case of small amo…","user":{"login":"ndwangsen","id":19197377,"avatar_url":"https://avatars3.githubusercontent.com/u/19197377?v=4","gravatar_id":"","url":"https://api.github.com/users/ndwangsen","html_url":"https://github.com/ndwangsen","followers_url":"https://api.github.com/users/ndwangsen/followers","following_url":"https://api.github.com/users/ndwangsen/following{/other_user}","gists_url":"https://api.github.com/users/ndwangsen/gists{/gist_id}","starred_url":"https://api.github.com/users/ndwangsen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ndwangsen/subscriptions","organizations_url":"https://api.github.com/users/ndwangsen/orgs","repos_url":"https://api.github.com/users/ndwangsen/repos","events_url":"https://api.github.com/users/ndwangsen/events{/privacy}","received_events_url":"https://api.github.com/users/ndwangsen/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":9,"created_at":"2018-05-17T12:20:06Z","updated_at":"2018-05-22T12:47:58Z","closed_at":null,"author_association":"CONTRIBUTOR","pull_request":{"url":"https://api.github.com/repos/apache/carbondata/pulls/2314","html_url":"https://github.com/apache/carbondata/pull/2314","diff_url":"https://github.com/apache/carbondata/pull/2314.diff","patch_url":"https://github.com/apache/carbondata/pull/2314.patch"},"body":"In some scenario, the input amount of loading data is small, but carbondata still distribute them to each executors (nodes) to do local-sort, thus resulting to small carbondata files generated by each executor. \r\n\r\nIn  some extreme conditions, if the cluster is big enough or if the amount of data is small enough, the carbondata file contains only one blocklet or page.\r\n\r\nI  think a new strategy should be introduced to solve the above problem.\r\n\r\nThe new strategy should:\r\n\r\nbe able to control the minimum amount of input data for each node\r\nignore data locality otherwise it may always choose a small portion of particular nodes\r\n\r\nBe sure to do all of the following checklist to help us incorporate \r\nyour contribution quickly and easily:\r\n\r\n - [x] Any interfaces changed?\r\n   NO\r\n - [x] Any backward compatibility impacted?\r\n   NO\r\n - [x] Document update required?\r\n   YES\r\n - [x] Testing done\r\n        Please provide details on \r\n        - Whether new unit test cases have been added or why no new tests are required?\r\n           YES\r\n        - How it is tested? Please attach test report.\r\n          Tested in local\r\n        - Is it a performance related change? Please attach the performance test report.mac\r\n          After this PR, performance is as we expected\r\n        - Any additional information to help reviewers in testing this change.\r\n          NO\r\n - [x] For large changes, please consider breaking it into sub-tasks under an umbrella JIRA. \r\n          NO\r\n"},"comment":{"url":"https://api.github.com/repos/apache/carbondata/issues/comments/390977196","html_url":"https://github.com/apache/carbondata/pull/2314#issuecomment-390977196","issue_url":"https://api.github.com/repos/apache/carbondata/issues/2314","id":390977196,"user":{"login":"kumarvishal09","id":13032998,"avatar_url":"https://avatars0.githubusercontent.com/u/13032998?v=4","gravatar_id":"","url":"https://api.github.com/users/kumarvishal09","html_url":"https://github.com/kumarvishal09","followers_url":"https://api.github.com/users/kumarvishal09/followers","following_url":"https://api.github.com/users/kumarvishal09/following{/other_user}","gists_url":"https://api.github.com/users/kumarvishal09/gists{/gist_id}","starred_url":"https://api.github.com/users/kumarvishal09/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kumarvishal09/subscriptions","organizations_url":"https://api.github.com/users/kumarvishal09/orgs","repos_url":"https://api.github.com/users/kumarvishal09/repos","events_url":"https://api.github.com/users/kumarvishal09/events{/privacy}","received_events_url":"https://api.github.com/users/kumarvishal09/received_events","type":"User","site_admin":false},"created_at":"2018-05-22T12:47:58Z","updated_at":"2018-05-22T12:47:58Z","author_association":"CONTRIBUTOR","body":"@ndwangsen What about the existing strategy???\r\n Can u please explain how u are planing to handle this??"}}
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