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Posted to solr-user@lucene.apache.org by Prasi S <pr...@gmail.com> on 2013/08/01 12:51:52 UTC
SolrCloud separate indexer and Searcher
i am using solr 4.0 for indexing db content to a cloud . Currently i have
two solr isntances running in separate app servers. Can I have a one solr
separately as indexer instance and another as a searcher.
This is possible in Master-Slave but does this hold good for SorlCloud also?
Because from what i understand, if Isetup two solr isntances, cloud
automatically routes docuemtns to both the servers.
Please guide me on this
thanks,
Prasi
Re: SolrCloud separate indexer and Searcher
Posted by Shawn Heisey <so...@elyograg.org>.
On 8/1/2013 8:50 PM, Prasi S wrote:
> CAn you pls elaborate on what old-style master/slave mean? Does it mean
> that we can have separate indexer and searcher.
With master/slave, you have one Solr instance that's your master. All
indexing happens on this server. The other instance(s) replicate from
the master. In a typical master/slave setup, queries will be sent to
slaves, which all replicate from a master. If there are multiple
slaves, there is typically a load balancer in front of them.
http://wiki.apache.org/solr/SolrReplication
The replication is one way. Unless you do a bunch of manual
reconfiguration, you can't change the replication direction. It's
difficult to automate.
SolrCloud is very different. When you send queries, they are
automatically load balanced across the cluster. When you send index
updates, they are sent to all replicas automatically, and each replica
indexes the data independently. Both queries and updates can be sent to
any server in the cluster.
http://wiki.apache.org/solr/SolrCloud
Thanks,
Shawn
Re: SolrCloud separate indexer and Searcher
Posted by Prasi S <pr...@gmail.com>.
Erick,
CAn you pls elaborate on what old-style master/slave mean? Does it mean
that we can have separate indexer and searcher.
On Thu, Aug 1, 2013 at 8:42 PM, Erick Erickson <er...@gmail.com>wrote:
> To add to what Shawn said, do note that Solr 4.x can
> operate either in old-style master/slave mode or
> SolrCloud...
>
> Best
> Erick
>
>
> On Thu, Aug 1, 2013 at 10:34 AM, Shawn Heisey <so...@elyograg.org> wrote:
>
> > On 8/1/2013 4:51 AM, Prasi S wrote:
> > > i am using solr 4.0 for indexing db content to a cloud . Currently i
> have
> > > two solr isntances running in separate app servers. Can I have a one
> solr
> > > separately as indexer instance and another as a searcher.
> > >
> > > This is possible in Master-Slave but does this hold good for SorlCloud
> > also?
> > > Because from what i understand, if Isetup two solr isntances, cloud
> > > automatically routes docuemtns to both the servers.
> >
> > Master/Slave does exactly what you describe.
> >
> > SolrCloud doesn't have master/slave concepts - it's a true cluster.
> > Indexing and querying both happen on all replicas in the cloud,
> > automatically.
> >
> > Thanks,
> > Shawn
> >
> >
>
Re: SolrCloud separate indexer and Searcher
Posted by Erick Erickson <er...@gmail.com>.
To add to what Shawn said, do note that Solr 4.x can
operate either in old-style master/slave mode or
SolrCloud...
Best
Erick
On Thu, Aug 1, 2013 at 10:34 AM, Shawn Heisey <so...@elyograg.org> wrote:
> On 8/1/2013 4:51 AM, Prasi S wrote:
> > i am using solr 4.0 for indexing db content to a cloud . Currently i have
> > two solr isntances running in separate app servers. Can I have a one solr
> > separately as indexer instance and another as a searcher.
> >
> > This is possible in Master-Slave but does this hold good for SorlCloud
> also?
> > Because from what i understand, if Isetup two solr isntances, cloud
> > automatically routes docuemtns to both the servers.
>
> Master/Slave does exactly what you describe.
>
> SolrCloud doesn't have master/slave concepts - it's a true cluster.
> Indexing and querying both happen on all replicas in the cloud,
> automatically.
>
> Thanks,
> Shawn
>
>
Re: SolrCloud separate indexer and Searcher
Posted by Shawn Heisey <so...@elyograg.org>.
On 8/1/2013 4:51 AM, Prasi S wrote:
> i am using solr 4.0 for indexing db content to a cloud . Currently i have
> two solr isntances running in separate app servers. Can I have a one solr
> separately as indexer instance and another as a searcher.
>
> This is possible in Master-Slave but does this hold good for SorlCloud also?
> Because from what i understand, if Isetup two solr isntances, cloud
> automatically routes docuemtns to both the servers.
Master/Slave does exactly what you describe.
SolrCloud doesn't have master/slave concepts - it's a true cluster.
Indexing and querying both happen on all replicas in the cloud,
automatically.
Thanks,
Shawn