Hi Mike, Correct on forward to leader, but given we have a lot of docs we wanted to index directly to the leader for performance reasons.
On Fri, Jan 6, 2017 at 9:45 AM, Mike Linnetz <mike.linn...@theprimacy.com> wrote: > Hi Xavier, > > Thanks for the confirmation. > > RE: indexing, Jan had a similar suggestion: > "Another solution is to talk to ZK from your .NET application code > directly, just to pull out the cluster state for each collection, and thus > be able to pick nodes yourself in an intelligent way..." > > Did you do that for performance reasons? > As I understand it, any request to index a document will automatically > forward it to the leader. > > Thanks, > Mike > > -----Original Message----- > From: Xavier Morera [mailto:xav...@familiamorera.com] > Sent: Friday, January 6, 2017 9:35 AM > To: general@lucene.apache.org > Subject: Re: Question: Does Zookeeper/SolrCloud handle the failover? > > Hi, > > That's what we did in a project I was involved. Works fine for search. For > indexing we check clusterstate.json to see who is leader and then send all > indexing requests to leader > > Xavier > > -------------------------------------------- > Sent from a small attention grabbing screen > > > > On Jan 6, 2017, at 06:20, Mike Linnetz <mike.linn...@theprimacy.com> > wrote: > > > > Thanks for the reply! > > What you describe makes sense. > > > > I have another question as I'd like to present my team all of the > options. > > > > As an alternative to using SolrNetCloud to load balance, couldn't I just > configure my network load balancer to distribute requests among my cloud > instances? As I understand it, Zookeeper and SolrCloud should take care of > propagating any updates across all nodes in a collection if a request is > routed to any node in the collection. > > Is there anything I'm missing such that that solution would not work? > > > > Thanks, > > Mike > > > > > > -----Original Message----- > > From: Mikhail Khludnev [mailto:m...@apache.org] > > Sent: Thursday, January 5, 2017 4:26 PM > > To: general@lucene.apache.org > > Subject: Re: Question: Does Zookeeper/SolrCloud handle the failover? > > > > Hello, Mike! > > > > As far as I've got, you need to connect to SolrCloud (Zookeeper) via > > Solr.Net library. > > Here is the reference to the fork where it's done. > > https://github.com/mausch/SolrNet/issues/174#issuecomment-143697474 > > Let me know if you need more info. > > > > On Thu, Jan 5, 2017 at 8:50 PM, Mike Linnetz < > mike.linn...@theprimacy.com> > > wrote: > > > >> Hello, > >> > >> I am new to SolrCloud and Zookeeper, and there's a piece of the puzzle > on > >> which I'm unclear. I don't understand whether/how SolrCloud and > Zookeeper > >> handles the high availability aspect. That is, once I have the > Zookeeper > >> ensemble set up, now how do I reference the collection in a > >> "high-availability" fashion so that if one Solr instance is down, it > will > >> automatically route to another instance? > >> > >> Am I thinking that SolrCloud does more than it actually does? That is, > >> could I instead handle all Load Balancing outside of Zookeeper, and just > >> use our company's network load balancer to route/distribute traffic for > a > >> single consolidated URL:port to the different actual Solr > Instances/Ports? > >> > >> Here's more details in case it helps: > >> I have an ASP.NET application which uses SolrNet to query and write to > a > >> standalone Solr instance. In my program , I specify the hostname:port > of > >> my Solr instance: > >> Startup.Init<SolrDoc>("hostname:port"); > >> This setup was used for development and testing. > >> > >> Now, for production, I need to implement Solr in a H.A. fashion so that > I > >> don't have a single point of failure. So, following Apache's > >> documentation, I understand that the solution would be to set up an > >> external Zookeeper Ensemble. > >> So, let's say I set up a new Zookeeper Ensemble (three instances). Let's > >> also say I have three Solr instances, #shards = 2, #replicas per shard > = 2. > >> > >> Once I have the Zookeeper ensemble set up, now how do I reference the > >> collection? > >> Previously, my code references a single standalone Solr instance, " > >> http://solrserver1:9983";. What do I point it to now? > >> > >> If I point it to any of the three Solr instances, and if that instance > I'm > >> referencing goes down, it means the request would fail, right? > >> > >> I read similar questions online, for example https://groups.google.com/ > >> forum/#!msg/solrnet/-PeaGrLAMtw/pAfxuoYLVnIJ, and the answer seems to > be > >> that SolrNet doesn't support this type of HA. So, do I understand > >> correctly that the load balancing aspect needs to be handled on the > >> client-side (or via a network load balancer), not the > zookeeper/solrcloud > >> server side? > >> > >> Thanks, > >> Mike > >> > >> > >> > >> > > > > > > -- > > Sincerely yours > > Mikhail Khludnev > -- *Xavier Morera* Entrepreneur | Author & Trainer | Consultant | Developer & Scrum Master *www.xaviermorera.com <http://www.xaviermorera.com/>* office: (305) 600-4919 cel: +506 8849-8866 skype: xmorera Twitter <https://twitter.com/xmorera> | LinkedIn <https://www.linkedin.com/in/xmorera> | Pluralsight Author <http://www.pluralsight.com/author/xavier-morera>
