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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2020/05/11 05:52:10 UTC

[GitHub] [incubator-iotdb] HTHou commented on pull request #983: Online Upgrade Tool

HTHou commented on pull request #983:
URL: https://github.com/apache/incubator-iotdb/pull/983#issuecomment-626485419


   
   > Imagine, when IoTDB evolves to 0.12, 0.13, or even higher version, such codes will either go to hell or grow fatter and fatter. What will you do to the classes like OldMetadata, OldDigest? Will we have OldMetadataV1, OldMetadataV2... simultaneously in the server module? I think that is unimaginable.
   
   When IoTDB evolves to newer versions, the code for upgrading 0.9 to 0.10 will be removed. Because we are not going to support to upgrade directly from 0.8 to 0.10. 
   
   But I think keeping the old structures away from new codes is a good idea. 
   How do you think, @qiaojialin?
   


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