If that is the case if I do maintain only one versions of my data is this retrieval is possible?
Thanks On Fri, Jan 22, 2016 at 11:01 AM, ramkrishna vasudevan < ramkrishna.s.vasude...@gmail.com> wrote: > Currently that is not possible. The reason being that the columns are not > fixed in HBase. > There could be another row or may another version of this row 100 where > there are only col2 and col4 populated and there is no col1 and col3. > So as per your schema you should be knowing with which column the value is > associated. > In other words > > Row-key col1 col2 col3 col4 > > 100 xxx yyy zzz aaa > 100 xxx yyy > > Now how do you know xxx is associated with col2 or col1 when you try to > retrieve the latest version of row key 100? > > Regards > Ram > > > On Fri, Jan 22, 2016 at 10:55 AM, Rajeshkumar J < > rajeshkumarit8...@gmail.com > > wrote: > > > Hi, > > > > For instance > > > > Row-key col1 col2 col3 col4 > > > > 100 xxx yyy zzz aaa > > > > I am scanning this row-key(100) and I want to get the value as > > xxx,yyy,zzz,aaa from Result instance. Not using iterator to get xxxx then > > yyyy then zzzz then aaaa. > > > > Thanks > > > > On Fri, Jan 22, 2016 at 10:47 AM, ramkrishna vasudevan < > > ramkrishna.s.vasude...@gmail.com> wrote: > > > > > Once you retrieve a result it will have all the columns that were > > scanned. > > > If suppose you had 5 columns and you specifically wanted only 2 columns > > out > > > of it you can add the required columns using scan.addColumn() API then > > the > > > result will have only those 2 columns. > > > If nothing is specified your result will have entire set of columns > that > > > comprises that row (including multiple Column families). > > > > > > But every column's result is an individual KeyValue which you may have > to > > > iterate and get it. > > > >> So is there any option to get all the column > > > values of row-key at once. > > > So this is already happening for you. Am I missing something here? > > > > > > On Fri, Jan 22, 2016 at 10:31 AM, Rajeshkumar J < > > > rajeshkumarit8...@gmail.com > > > > wrote: > > > > > > > Hi, > > > > > > > > I have already posted this in mailing list but with changes in my > use > > > > case. Is there any options to retrieve all the columns of row-key at > > > once. > > > > > > > > ResultScanner resultScanner = table.getScanner(scan); > > > > Iterator<Result> iterator = resultScanner.iterator(); > > > > while (iterator.hasNext()) { > > > > Result next = iterator.next(); > > > > for (KeyValue key : next.list()) { > > > > > > > > System.out.println(Bytes.toString(key.getValue())); > > > > } > > > > > > > > > > > > > > > > This is how I am doing scan using java api. Using this I can get > only > > > one > > > > columns in each iteration. So is there any option to get all the > column > > > > values of row-key at once. > > > > > > > > Thanks > > > > > > > > > >