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								How do elasticsearch nested objects split query results?
								
 there are multiple items under an order. The order object is stored in the form of nested, and an order is a piece of data. 
 order 1-> Commodity A, Commodity B, Commodity C, Commodity D  order 2-> Commodity A, Commodity B, Commodity C, Commodity D.  or... 
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								Why does the type of geo_point not take effect if a field in the logstash log is set?
								
 the architecture is simple: 
 filebeat collects nginx logs, output to logstash 
 logstash format and then output to elasticsearch 
There is nothing to say about the configuration of  filebeat but to send the access.log of nginx directly to logstash 
 ... 
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								Elasticsearch json aggregation search
								
 now there is a need to count user operations, because there must be a large amount of data lost in mysql, so we are going to use elasticsearch. At present, there is a problem. Post the structure directly .
{
  "_index": "test_vpn_operatio... 
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								Questions about the Chapter "Mapping and Analysis" of elasticsearch Chinese documents
								
 document connection  here    
 the above example cannot be realized at all 
 I try the following: 
POST  gb tweet _bulk
{ "index": { "_id": 1 }}
{ "name" : "MySQL", "user_id" : "15", "twee... 
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								After Elasticsearch, uses ik participle, the result of the aggregate query is lowercase letters?
								
When the value of the  field is   AA  , the result of the aggregate query is   how does aa  , get the original value? 
 make the following query: 
POST  113 _search
{
  "query": {
    "query_string": {
      "query": "J... 
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								10 pieces of data sampled by elasticsearch
								
 such as the title. 
 how does elasticsearch sample 10 items from millions of data, which ensure the ranking of correlation and try not to repeat the search with the same conditions in a small number of times. 
... 
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								Spring Cloud distributed link tracking sleuth+rabbitMQ+ElasticSearch+Zipkin integration failed
								
  phenomenon: the service cannot be found using ElasticSearch as the storage method. There is no problem with using MySQL as the storage method before, and the service can be found quickly    now the console does not report an error  
  
 properties file... 
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								How does elasticsearch implement such a search?
								 using elasticsearch as a full-text search engine, we now encounter a problem. The  index data comes from the commodity table good, assumes that the search keyword  "tractor " can find 100 items of data, belonging to five enterprises, each of which upload... 
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								Elasticsearch is reasonable about how to design index and type.
								 now there are several completely different statistical data structures for a city, which are obtained from parsing tables. If you put dozens of type, under an index in the mapping of ES, there are probably dozens of type, under different Index or all und... 
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								What is the syntax of kibana filter mismatch?
								
 I want to drop the url field in kibana visualize, Filter, which ends with js. How do I write query dsl?? I can  t write it in the following way 
{
  "query": {
    "bool": {
      "must_not": [
        {
          "mat... 
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								Logstash-6.2.2 startup failed
								
 1.ES 9200 port started  2.logstashhost192.168.33.10 
 
 what is the cause of the error? How to solve it? 
... 
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								How to check whether kibana and elsasticsearch-head services are started
								
 the kibana and elasticsearch-head corresponding to the higher version of elasticsearch are developed by nodejs, and the startup is also started through the command npm run start of nodejs 
 but after startup, how to determine whether the service is star... 
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								Elasticsearch uses spring data to aggregate queries. Filter condition does not take effect.
								 **
 * 
 * @return list
 * 
public List<UserResponseVO> listConditionsAggregations() {
    TermsAggregationBuilder builder = AggregationBuilders.terms("interests").field("interests");
    SearchQuery query = new NativeSearchQuery... 
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								Elasticsearch uses spring data to aggregate queries. Filter condition does not take effect.
								 **
 * 
 * @return list
 * 
public List<UserResponseVO> listConditionsAggregations() {
    TermsAggregationBuilder builder = AggregationBuilders.terms("interests").field("interests");
    SearchQuery query = new NativeSearchQuery... 
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								In ES, how to use templates for all fields under a field, and not for fields outside the field.
								
 now is a scenario where there are 50 fields under field A, and these fields are of the same type as the parser. You don  t want to specify one by one manually. You want to set the template. 
 but I  m afraid that setting a template will affect all field... 
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								Unable to set password and login after installing x-pack
								
 has installed elasticsearch, version 6.2.4, and started normally 
 has installed kibana, version 6.2.4 and started normally 
 x-pack version is installed according to the official method, 6.2.4 
 elasticsearch and kibana start up normally 
 however, d... 
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								How to implement Array containing query by es (elasticsearch)
								
 es (elasticsearch) how to implement the array containing query  index data mVIA: [1,2,3]  index array NVIA: [1mem3lce4]  query condition: a: [1p3L4]  requires to include query, can find index data n, index data n is in the query condition, index data m ... 
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								How many inputs of filebeat nodes can logstash hold?
								
 excuse me, 
 A 4-core 8G machine with logstash, deployed on it can probably support several log input nodes of filebeat. If there is no message queue as buffer, do you have any experience in this field? 
 similarly, how many logstash nodes can a 4-core ... 
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								ImportError: cannot import name InnerObjectWrapper
								
 Python 2.7.12,  elasticsearch 6.2.0  elasticsearch-dsl 6.1.0 
from elasticsearch_dsl import InnerObjectWrapper
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name InnerObjectWrap... 
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								How does elasticsearch read one-to-many, parent-child data structures at one time?
								
 for example, the data structure is as follows: 
 posts-- comments on posts-- comment users 
 3 layers. 
 now you need to query a post. It is best to find the comments under the post and the user data under the comments. 
 can a query be done? 
...