On Mon, Feb 13, 2012 at 1:25 AM, hongqizh <[email protected]> wrote: > Hello, > > I want to retrieve the structure of a table, and now I know how to get the > column families of a table, HTable->HTableDescriptor->HColumnDescriptor, but > I was blocked when I trying to find the API to get the columns of a column > family. Anyone knows about this API? > > Thanks a lot for your help! >
Its not possible without getting all data in all columns; no two rows necessarily have the same columns. But perhaps there was some discipline in place inserting data in your case and retrieving all data on a particular row will tell you the columns used on all rows? St.Ack
