public void deleteFromSchema(Mutation mutation, long timestamp)
    {
        ColumnFamily cf = mutation.addOrGet(CFMetaData.SchemaColumnsCf);
        int ldt = (int) (System.currentTimeMillis() / 1000);

        // Note: we do want to use name.toString(), not name.bytes directly for backward compatibility (For CQL3, this won't make a difference).
        Composite prefix = CFMetaData.SchemaColumnsCf.comparator.make(cfName, name.toString());
        cf.addAtom(new RangeTombstone(prefix, prefix.end(), timestamp, ldt));
    }
public void deleteFromSchema ( Mutation mutation , long timestamp ) { ColumnFamily cf = mutation . addOrGet ( CFMetaData . SchemaColumnsCf ) ; int ldt = ( int ) ( System . currentTimeMillis ( ) / 1000 ) ; Composite prefix = CFMetaData . SchemaColumnsCf . comparator . make ( cfName , name . toString ( ) ) ; cf . addAtom ( new RangeTombstone ( prefix , prefix . end ( ) , timestamp , ldt ) ) ; }
Drop specified column from the schema using given mutation.

@param mutation  The schema mutation
@param timestamp The timestamp to use for column modification