Answer inline. > 在 2018年7月6日，下午3:24，xuchuanyin <xuchuan...@hust.edu.cn> 写道： > > Hi, jacky, please check the following comments: > > > 1. Do we need to provide other inferfaces, such as `listTable`, > `renameTable`…
As of now, I have added getTable to return the CarbonTable. For more metadata interfaces like listTable, renameTable you mentioned, I would like to add it later if there are use cases for them. > > 2. What's the difference between the function of 'Carbon-SDK' and > ‘CarbonStore' Carbon SDK is used for reading and writing carbondata files, it is in file level, while CarbonStore is a store level interface that operates on “Table”. And CarbonStore is built on top of Carbon-SDK > > As for the CarbonStore API `createTable`: > 3. Will it make use of the existing `TableSchemaBuilder`? Yes, it will > 4. Better to return the `TableIdentifier` instead of `void`? Now, TableIdentifier is a simple object that contains table name and database name (optional). I think user wants to provide this when creating table. I guess you want createTable to return CarbonTable? This can be consider, I just prefer to keep the interface simple as a first step. > > As for the CarbonStore API `loadData`: > 5. Is it possible to return the number of records that have been loaded. I think this can be consider, are you looking for a specific use case? > > 6. What's the relationship between `CarbonStore` and Session? (for set > command) CarbonStore is targeted as a library that works independently without compute framework like spark. As we are adding more functionality to carbon, I think we’d better to add them in CarbonStore in the future, and spark/presto can integrate CarbonStore in its integration module. So to answer your question, one possibility is that CarbonSession will use CarbonStore internally, to be specific, CarbonScanRDD will use CarbonStore. > > > > > -- > Sent from: > http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/ >
