Hi Contributors, To improve the CarbonData system's usability and maintainability, I suggest to add carbon-tools module. I think this module should provide some command tools as following. 1. import import a file/folder to any existing table 2. export export the given columns to a file 3. schema show the detail information of the specified table schema file 4. metadata show tablestatus metadata show the history track for dataloading and compaction 5. footer show blocklet metadata list show start/end key, min/max value, row number, total size for the specified blocklet 6. blocklet show blocket list show blocket data, RLE map, Inverted index for the given columns 7. index show BTree node list show node information:start/end key, min/max value) 8. dictionary show key-value list of specified dictionary file show sort index show dictionary metadata Thank you and look forward to having your opinion on this carbon-tools module. David Cai
