I configured a custom analyzer and put some documents into the index. Now I want to debug my settings so I can see which n-grams actually made it into the index.
When I used Solr before, there was a possibility to see which strings were saved in the index as keys and also their frequency.
This question is related to
elasticsearch
If you didn't index too much data into the index yet, you can use term facet query on the field that you would like to debug to see the tokens and their frequencies:
curl -XDELETE 'http://localhost:9200/test-idx'
echo
curl -XPUT 'http://localhost:9200/test-idx' -d '
{
"settings": {
"index.number_of_shards" : 1,
"index.number_of_replicas": 0
},
"mappings": {
"doc": {
"properties": {
"message": {"type": "string", "analyzer": "snowball"}
}
}
}
}'
echo
curl -XPUT 'http://localhost:9200/test-idx/doc/1' -d '
{
"message": "How is this going to be indexed?"
}
'
echo
curl -XPOST 'http://localhost:9200/test-idx/_refresh'
echo
curl -XGET 'http://localhost:9200/test-idx/doc/_search?pretty=true&search_type=count' -d '{
"query": {
"match": {
"_id": "1"
}
},
"facets": {
"tokens": {
"terms": {
"field": "message"
}
}
}
}
'
echo
You can even add the size of the terms (indexed terms). Have a look at Elastic Search: how to see the indexed data
You can view any existing index by using the below CURL. Please replace the index-name with your actual name before running and it will run as is.
View the index content
curl -H 'Content-Type: application/json' -X GET https://localhost:9200/index_name?pretty
And the output will include an index(see settings in output) and its mappings too and it will look like below output -
{
"index_name": {
"aliases": {},
"mappings": {
"collection_name": {
"properties": {
"test_field": {
"type": "text",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
},
"settings": {
"index": {
"creation_date": "1527377274366",
"number_of_shards": "5",
"number_of_replicas": "1",
"uuid": "6QfKqbbVQ0Gbsqkq7WZJ2g",
"version": {
"created": "6020299"
},
"provided_name": "index_name"
}
}
}
}
View ALL the data under this index
curl -H 'Content-Type: application/json' -X GET https://localhost:9200/index_name/_search?pretty
I can recommend Elasticvue, which is modern, free and open source. It allows accessing your ES instance via browser add-ons quite easily (supports Firefox, Chrome, Edge). But there are also further ways.
Just make sure you set cors values in elasticsearch.yml appropiate.
Source: Stackoverflow.com