Oui, ZK holds "the map". Otis -- Solr & ElasticSearch Support http://sematext.com/
On Tue, Apr 16, 2013 at 6:33 PM, Furkan KAMACI <furkankam...@gmail.com> wrote: > Hi Otis; > > You said: > > "It can just do it because it knows where things are." > > Does it learn it from Zookeeper? > > 2013/4/17 Otis Gospodnetic <otis.gospodne...@gmail.com> > >> If query comes to shard X on some node and this shard X is NOT a >> leader, but HAS data, it will just execute the query. If it needs to >> query shards on other nodes, it will have the info about which shards >> to query and will just do that and aggregate the results. It doesn't >> have to ask leader for permission, for info, etc. It can just do it >> because it knows where things are. >> >> Otis >> -- >> Solr & ElasticSearch Support >> http://sematext.com/ >> >> >> >> >> >> On Tue, Apr 16, 2013 at 5:23 PM, Furkan KAMACI <furkankam...@gmail.com> >> wrote: >> > Hi Mark; >> > >> > When I speak with proper terms I want to ask that: is there a data >> locality >> > of spatial locality ( >> > >> http://www.roguewave.com/portals/0/products/threadspotter/docs/2011.2/manual_html_linux/manual_html/ch_intro_locality.html >> > - I mean if you have data on your machine, use it and don't search it >> > anywhere else, just search for remaining parts) at querying on a leader >> of >> > SolrCloud? >> > >> > 2013/4/16 Mark Miller <markrmil...@gmail.com> >> > >> >> Leaders don't have much to do with querying - the node that you query >> will >> >> determine what other nodes it has to query to search the whole index >> and do >> >> a scatter/gather for you. (Though in some cases that request can be >> proxied >> >> to another node) >> >> >> >> - Mark >> >> >> >> On Apr 16, 2013, at 7:48 AM, Furkan KAMACI <furkankam...@gmail.com> >> wrote: >> >> >> >> > When a leader responses for a query, does it says that: "If I have the >> >> data >> >> > what I am looking for, I should build response with it, otherwise I >> >> should >> >> > find it anywhere. Because it may be long to search it?" >> >> > or >> >> > does it says I only index the data, I will tell it to other guys to >> build >> >> > up the response query? >> >> >> >> >>
