# ES version 16.0 queries **URL:** \ **Category:** Elasticsearch\ **Created:** [July 14, 2011, 9:19pm UTC](https://discuss.elastic.co/t/es-version-16-0-queries/4865 "2011-07-14T21:19:44Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Katrina\_K](https://avatars.discourse-cdn.com/v4/letter/k/f6c823/32.png) [@Katrina\_K](https://discuss.elastic.co/u/Katrina_K)\ **Post date:** [July 14, 2011, 9:19pm UTC](https://discuss.elastic.co/t/es-version-16-0-queries/4865/1 "2011-07-14T21:19:44Z")
Hi Shay, Please help me out by answering the following queries. The Es version I am using is 16.0. 1.What is the maximum child type associated with parent type? Is there any limitation on this? 2.What is the best configuration for the production server that we can equip? 3.What is the maximum hash child we can send in a single query? For the same scenario, if multiple users uses. 4.When I try to hit my application, it gradually increases the memory of ES is going up to the maximum level which I setup in server. When this will come to normal position? Do I need to give any query for normalizing the memory level? 5.I use to get the following error “Remote Transport Exception” and when I check for memory, it shows normal usage only. Why is it happening like this? Thanks Katrinaa ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [July 15, 2011, 5:21am UTC](https://discuss.elastic.co/t/es-version-16-0-queries/4865/2 "2011-07-15T05:21:11Z")
On Friday, July 15, 2011 at 12:19 AM, Katrina K wrote: > Hi Shay, > > Please help me out by answering the following queries. The Es version > I am using is 16.0. > > 1.What is the maximum child type associated with parent type? Is there > any limitation on this? > There isn't a limit for it. > 2.What is the best configuration for the production server that we can > equip? > Its a too open ended question to answer... > 3.What is the maximum hash child we can send in a single query? For > the same scenario, if multiple users uses. > There is no limit, the more you have, the slower the query will be. > 4.When I try to hit my application, it gradually increases the memory > of ES is going up to the maximum level which I setup in server. When > this will come to normal position? Do I need to give any query for > normalizing the memory level? > Parent child requires loading all the id values to memory, you might hit that. You need to increase the memory allocated to elasticsearch or start more nodes if it does not have enough mem. > 5.I use to get the following error “Remote Transport Exception” and > when I check for memory, it shows normal usage only. Why is it > happening like this? > Can you gist the exception failure? > > Thanks > Katrinaa ---
**Author:** ![Katrina\_K](https://avatars.discourse-cdn.com/v4/letter/k/f6c823/32.png) [@Katrina\_K](https://discuss.elastic.co/u/Katrina_K)\ **Post date:** [July 18, 2011, 6:27am UTC](https://discuss.elastic.co/t/es-version-16-0-queries/4865/3 "2011-07-18T06:27:03Z")
Hi Shay, While querying Elastic search with has-child query concurrently we are getting the following error. We are searching with following characteristics. 1. Search type as "dfs\_query\_then\_fetch". 2. Query is based on more than 4 child tables 3. More than 7 users concurrently hitting Elastic search. 4. Occasionaly we are getting following errors... {"took":407125,"timed\_out":false,"\_shards":{"total":6,"successful": 2,"failed":4,"failures":[{"reason":"RemoteTransportException[[Omega the Unknown][inet[/10.41.23.16:9300]][search/phase/fetch/id]]; nested: SearchContextMissingException[No search context found for id [9998]]; "},{"reason":"RemoteTransportException[[Ebon Seeker][inet[/ 10.41.23.19:9300]][search/phase/fetch/id]]; nested: SearchContextMissingException[No search context found for id [7908]]; "},{"reason":"RemoteTransportException[[Ebon Seeker][inet[/ 10.41.23.19:9300]][search/phase/fetch/id]]; nested: SearchContextMissingException[No search context found for id [7909]]; "},{"reason":"RemoteTransportException[[Sweetface][inet[/ 10.41.23.21:9300]][search/phase/fetch/id]]; nested: SearchContextMissingException[No search context found for id [5086]]; "}]} Thanks, Katrina On Jul 15, 10:21 am, Shay Banon [shay.ba...@elasticsearch.com](mailto:shay.ba...@elasticsearch.com) wrote: > On Friday, July 15, 2011 at 12:19 AM, Katrina K wrote: > > > Hi Shay, > > > Please help me out by answering the following queries. The Es version > > I am using is 16.0. > > > 1.What is the maximum child type associated with parent type? Is there > > any limitation on this? > > There isn't a limit for it.\> 2.What is the best configuration for the production server that we can > > > equip? > > Its a too open ended question to answer...\> 3.What is the maximum hash child we can send in a single query? For > > > the same scenario, if multiple users uses. > > There is no limit, the more you have, the slower the query will be.\> 4.When I try to hit my application, it gradually increases the memory > > > of ES is going up to the maximum level which I setup in server. When > > this will come to normal position? Do I need to give any query for > > normalizing the memory level? > > Parent child requires loading all the id values to memory, you might hit that. You need to increase the memory allocated to elasticsearch or start more nodes if it does not have enough mem.\> 5.I use to get the following error “Remote Transport Exception” and > > > when I check for memory, it shows normal usage only. Why is it > > happening like this? > > Can you gist the exception failure? > > > Thanks > > Katrinaa- Hide quoted text - > > - Show quoted text - ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 4:00am UTC](https://discuss.elastic.co/t/es-version-16-0-queries/4865/4 "2017-07-06T04:00:20Z")
Closed on July 6, 2017, 4:00am UTC