On Mon, Nov 14, 2011 at 10:25 PM, Aditya Kumar <[email protected]> wrote: > can any one please clarify me : > what is HLog,storefile.Hfile and store?
HLog is the name of our WAL implementation (see in code the wal package, see how the WAL implementation is done in the HLog class). HFile is about raw data blocks and indices to find those blocks as well as metadata about the file. Ideally it knows nothing about the upper hbase tiers. StoreFile then is the glue between hbase and its raw storage HFile. Store is the implementation of a Column Family (The Store class should have been called ColumnFamily) Sorry our naming is a little less clear than it should be. St.Ack
