- Each Lucene segment has its own cache. So indexing is not affecting too much search performances
- every node is a "master", everybody indexes and everybody searches
- To use kibana (http://127.0.0.1:5601/app/kibana#/dev_tools)
- to be able to access kibana from remote, change kibana.yml:
- server.host: "0.0.0.0"
PUT /fb
{
"settings": {
"analysis": {
"analyzer": {
"my_analyzer": {
"type": "custom",
"tokenizer" : "whitespace",
"filter": ["lowercase", "stop"]
}
}
}
},
"mappings": {
"pages": {
"properties": {
"about": {
"type": "text",
"fielddata": true,
"analyzer": "my_analyzer"
}
}
}
}
}
----- term facets
{
"settings": {
"analysis": {
"analyzer": {
"my_analyzer": {
"type": "custom",
"tokenizer" : "whitespace",
"filter": ["lowercase", "stop"]
}
}
}
},
"mappings": {
"pages": {
"properties": {
"about": {
"type": "text",
"fielddata": true,
"analyzer": "my_analyzer"
}
}
}
}
}
----- term facets
GET /fb/pages/_search
{
"size": 1,
"aggs" : {
"group_by_text_term" : {
"terms" : {
"field" : "about",
"size":30
}
}
}
}
{
"size": 1,
"aggs" : {
"group_by_text_term" : {
"terms" : {
"field" : "about",
"size":30
}
}
}
}
----------- facets on a category (after v5, text columns are also keyword columns)
GET /fb2/pages/_search
{
"size": 1,
"query": {
"match_all": {}
},
"aggs": {
"group_by_cat": {
"terms": {
"field": "category.keyword",
"size": 10
}
}
}
}
------------- delete all docs
POST /fb2/_delete_by_query
{
"query": {
"match_all": {}
}
}
------------- to get more details of what is happening in a query
POST antoine-try-iso2/_search
{
"profile": true,
"_source": ["s_alpha.denom"],
"query": {
[...]
http://127.0.0.1:9200/_cat/indices
------------- search templates
GET _cluster/state/metadata?pretty&filter_path=**.stored_scripts
------------- versions
Elasticsearch 6.0.0 beta (05/2017) based on Lucene 7.0.0
Elasticsearch 6.7.1 beta (04/2019) based on Lucene 7.7.1
Elasticsearch 7.0.0 beta (04/2019) based on Lucene 8.0.0
lucene = 6.6.1
.
Elasticsearch 2.4.0 based on Lucene 5.5.2 (08/2016)
(ES version hop 2.4 to 5.0)
(ES version hop 2.4 to 5.0)
Elasticsearch 5.0 (11/2016)
Elasticsearch 5.5.1, based on Lucene 6.5.1 (07/2017)
Elasticsearch 5.5.1, based on Lucene 6.5.1 (07/2017)
Elasticsearch 5.6.3, based on Lucene 6.6.3 (07/2017)
Elasticsearch 6.0.0 beta (05/2017) based on Lucene 7.0.0
Elasticsearch 6.7.1 beta (04/2019) based on Lucene 7.7.1
Elasticsearch 7.0.0 beta (04/2019) based on Lucene 8.0.0
In git sources:
vi buildSrc/version.properties
elasticsearch = 5.6.3lucene = 6.6.1
.
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