question: public int scan ( String table , String startkey , int recordcount , Set < String > fields , Vector < HashMap < String , ByteIterator > > result ) { long st = System . nanoTime ( ) ; int res = _db . scan ( table , startkey , recordcount , fields , result ) ; long en = System . nanoTime ( ) ; _measurements . measure ( "SCAN" , ( int ) ( ( en - st ) / 1000 ) ) ; _measurements . reportReturnCode ( "SCAN" , res ) ; return res ; }
target:  Perform a range scan for a set of records in the database. Each field/value pair from the result will be stored in a HashMap.