Thanks James's sharing. Does your client node has same performance (CPU & memory) as data node or lower perf?
On Sunday, May 31, 2015 at 12:25:58 AM UTC+8, James Macdonald wrote: > If it is good enough for you, it is good enough for you. I will just give > you one anecdote: We implemented 3 dedicated clients on a 9 data node > cluster and got a 2x performance improvement. Moving the query > coordination, network io (has to receive data from every shard), and > combination of results (aggs and sorts) off of the nodes providing the > results is very helpful. > > James > > > > On Sat, May 30, 2015 at 9:11 AM, Xudong You <xudon...@gmail.com > <javascript:>> wrote: > >> Thanks Nikolas, >> How do you think about dedicated "client node" (the so called load >> balance node)? Any benefit of dedicated client node? Seems to me, round >> robin to data nodes is good enough. >> >> On Friday, May 29, 2015 at 10:55:01 PM UTC+8, Nikolas Everett wrote: >>> >>> Dedicated master nodes are super convenient if you have the it >>> infrastructure to host them on shared machines because they are very low >>> load and its useful to be able to restart the master nodes quickly. We >>> don't have that kind of infrastructure and our cluster is pretty large and >>> not having it has bitten us once or twice but its not a huge problem. >>> >>> >>> >>> On Fri, May 29, 2015 at 10:44 AM, Xudong You <xudon...@gmail.com> wrote: >>> >>>> Right now we only need 4 ES nodes due to the small data volume, and all >>>> 4 nodes are master & data nodes. >>>> >>>> Q1: >>>> I am wondering in this case, is it necessary to have dedicated master >>>> and client node? Any benefit of having dedicated master node? >>>> >>>> Some one said that dedicated master nodes (say, three master nodes) is >>>> helpful to avoid the split brain issue, but even we have NO dedicated >>>> master nodes, we can also avoid the split brain by setting the >>>> *discovery.zen.minimum_master_nodes >>>> *to a appropriate value. >>>> >>>> Q2: >>>> Similarly, is dedicated client node really necessary in our 4 nodes >>>> case? Any benefit of allocating dedicated client node? >>>> >>>> Thanks! >>>> >>>> -- >>>> Please update your bookmarks! We have moved to >>>> https://discuss.elastic.co/ >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "elasticsearch" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to elasticsearc...@googlegroups.com. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/elasticsearch/de7db788-a6d2-48c2-934b-bc5f7ae311a9%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/elasticsearch/de7db788-a6d2-48c2-934b-bc5f7ae311a9%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> Please update your bookmarks! We have moved to >> https://discuss.elastic.co/ >> --- >> You received this message because you are subscribed to the Google Groups >> "elasticsearch" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to elasticsearc...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/elasticsearch/d61afae2-2e47-4b65-866b-5a55d28b84ea%40googlegroups.com >> >> <https://groups.google.com/d/msgid/elasticsearch/d61afae2-2e47-4b65-866b-5a55d28b84ea%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- Please update your bookmarks! We have moved to https://discuss.elastic.co/ --- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/6a178f09-b94f-4400-9267-bec1f5278ba0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
