Hi Pithon,
I have to state beforehand that I worked with transactions on Solr 4.8.1,
so I'm not sure the transactions are changed in Solr over time.
And, I have to add, the transactions support not is very well documented,
so most of what I know is based on my experience.
Given that, Solr clients connects via HTTP, which is a stateless protocol,
so many clients can connect concurrently.
That's important point, and IMHO it make a great difference from other
products that have clients with an "open connection", which enable them to
have a transaction at protocol level.
So this means that when a client commit (or rollback) to all active
clients are involved.
When a client rollbacks, all the previous work done by all the clients will
be rollbacked.
That's why, if you really need to rollback, only one client should be
connected at a time.
I think, if you really want implement transactions with Solr, what you can
do is add a layer, your own layer, that transparently give this
functionality.
Best regards,
Vincenzo
On Tue, Jun 7, 2016 at 11:14 AM, Pithon Philippe <ppithon.si...@gmail.com>
wrote:
> Thanks,
> my problem is for rollback transaction by user...
> if there is a problem in trycatch for a user, the rollback run for all
> users commit...
> Philippe
>
> 2016-06-07 9:23 GMT+02:00 Mikhail Khludnev <mkhlud...@griddynamics.com>:
>
> > Hello,
> >
> > That's how Lucene work underneath.
> > Just ad-hoc idea you can have isolated per session indices and then add
> > them altogether. Thinking deeper, we can consider per thread invertors
> > which somehow isolated, perhaps something transactional might be built on
> > top of them, but it's really deep hack.
> > Anyway, it.s not clear what you want to achieve and why by this way.
> Also,
> > this question suits for dev@ much more.
> > 07 июня 2016 г. 9:41 пользователь "Pithon Philippe" <
> > ppithon.si...@gmail.com>
> > написал:
> >
> > > Hi,
> > > I have a question on Solr Transaction as relational databases
> > >
> > > The Solr commit is not isolated for each client session, right?
> > > In my test (source below) The commit in a session adds records of other
> > > sessions
> > > is there a documentation on this?
> > > is what's planned improvements on this? version 6, version 7?
> > > Thank you for any ideas!
> > >
> > >
> > > Source example :
> > >
> > > public class TransactionTest {
> > >
> > > static final String BASE_URL = "http://localhost:8983/solr/test";;
> > >
> > > public static void main(String[] args) {
> > >
> > > try {
> > > new TransactionTest();
> > > } catch (Exception e) {
> > > e.printStackTrace();
> > > }
> > >
> > > }
> > >
> > > public TransactionTest() throws Exception {
> > >
> > > HttpSolrClient solrClient = new HttpSolrClient(BASE_URL);
> > >
> > > DTOMail mail = new DTOMail();
> > > mail.setType("mail");
> > > mail.setBody("test body");
> > >
> > > System.out.println("add been");
> > > solrClient.addBean(mail);
> > >
> > > pause();
> > >
> > > System.out.println("commit");
> > > solrClient.commit();
> > >
> > > solrClient.close();
> > > }
> > >
> > > private void pause() {
> > >
> > > try {
> > > System.in.read();
> > > } catch (Exception e) {
> > > }
> > >
> > > }
> > >
> > > }
> > >
> >
>
--
Vincenzo D'Amore
email: v.dam...@gmail.com
skype: free.dev
mobile: +39 349 8513251
