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
