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Posted to issues@kudu.apache.org by "ZhangYao (JIRA)" <ji...@apache.org> on 2018/07/16 11:00:01 UTC

[jira] [Created] (KUDU-2502) Support for undo compaction when keeping long history of data

ZhangYao created KUDU-2502:
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             Summary: Support for undo compaction when keeping long history of data
                 Key: KUDU-2502
                 URL: https://issues.apache.org/jira/browse/KUDU-2502
             Project: Kudu
          Issue Type: New Feature
            Reporter: ZhangYao


    In some case table will update frequently, but we want to keep long history of data and don't need fine-grained version. If simply increase the undo gc time, there will be a lot of undo deltas which occupy too much disk space and degrade the scan performance. So we can implement an undo compaction opt to compact undo file in compaction interval we set to offset the negative influence.



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