I have a set of documents that has to be indexed in the following way:
1. fs$#56s as fs,$#,56,s
2. FSand-hgfh as fsand,-,hgfh
Is there a way to do so?
Thank you!
Related
So when querying ElasticSearch, I know you can constrain the size with the "size" parameter. By default, it's 10,000. I was wondering how to know what's the max (if it has been changed from 10,000)?
I have tried "/index/_settings" in hopes of finding the max_window_size, but couldn't find anything. I'm not necessarily sure if that's because it doesn't have a limit at all, or if I am doing something wrong.
So to rephrase my question: I basically want to know how to find the max size when trying to query "size: xx" to an elastic search server. If the size is 10,000/the default, then I want to know where I can find this number.
Any tips or guidance?
If the value isn't specified on the index itself (in _settings where you were looking), then it is 10000. You can change this setting only on the index itself as far as I know. To automatically apply it to new indices you can use an index template.
It appears to be an oversight by the devs to me, if you use rolling indices by date for example then there is no single index for you to query modifications to the value from (sure you could guess one). I think you just have to make sure to match your query code assumptions to your index template. In my opinion there should be a way to just ask for max results possible without needing to know that value beforehand.
You are correct in that elastic search default max query size is 10000. The way to get more is to use the "scroll" api:
https://www.elastic.co/guide/en/elasticsearch/reference/7.3/search-request-body.html#request-body-search-scroll
This essentially uses pagination to split your result into user defined segments and allows you to "scroll" to the next one using a "Scroll_id" that's returned from the initial query.
Is there any restriction of the length of field names in JSON documents stored in Elasticsearch?
The maximum length of Elasticsearch indices is 255 characters. But I didn't find any restrictions of field names.
Yes, for indices it's currently set to 255.
I couldn't find a limit for field names in a quick search through the source code. Also tried more than 6,000 and that worked without problems. So I guess for regular use cases you should be ok ;-)
I'm new to elasticsearch, and I have data that have two fields time and received_time. I want to make sure that all records matching the query have the difference within a threshold. How do I achieve that effectively? The official documentation only talks about "now" or literal values. Thanks in advance.
Edit: if it matters, I need both a minimum value and a maximum value. Thanks.
I want to search through my document to count the number of documents that contains specific word and other that does not have that specific word in kibana4.
can anyone help me about this?
Thanks
Use data table visualization
Use the filter agg type.
And give "NOT fieldName:missingValue" , to show the missing documents.
and "fieldName:value" , to show documents having the word.
I am using Mpdreamz/NEST for integrating Elasticsearch in C# . Is there any way to limit the number of words in a result string of query??
For example I have a field named 'Content' in ES and I need to dispaly 30 words of 'Content' matching 'sensex' from my index.
Thanks in advance for any help
You can't so easily even within Elasticsearch itself.
You have three options
Force excerpts by using highlighting
Try to use script_fields to return the first 30 words
At index time add another field that has just the first 30 words
Eventhough the first two are possible to do with NEST i would go for the third option since it won't incur a performance penalty at query time.