Getting empty buckets array in elasticsearch aggregation - elasticsearch

Question

I'm using version 5.4.1 of ElasticSearch.
When I try to perform a groupBy aggregate/bucket aggregate, I'm not getting any values in the bucket array.
This is my index:
curl -X PUT localhost:9200/urldata -d '{
"mappings" : {
"components" : {
"properties" : {
"name" : {
"type" : "keyword",
"index" : "not_analyzed"
},
"status" : {
"type" : "keyword",
"index" : "not_analyzed"
},
"timestamp":{
"type":"date",
"index":"not_analyzed"
}
}
}
}
}'
And this the aggregate query:
curl -XGET 'localhost:9200/urldata/_search?pretty' -H 'Content-Type: application/json' -d'
{
"size": 0,
"aggs": {
"components": {
"terms": {
"field": "name.keyword"
}
}
}
}
'
Output:
{
"took":2,
"timed_out":false,
"_shards":{
"total":5,
"successful":5,
"failed":0
},
"hits":{
"total":3,
"max_score":0.0,
"hits":[
]
},
"aggregations":{
"components":{
"doc_count_error_upper_bound":0,
"sum_other_doc_count":0,
"buckets":[
]
}
}
}
Where am I going wrong??

Answer 1

Try this, it should do it:
{
"size": 0,
"aggs": {
"components": {
"terms": {
"field": "name"
}
}
}
}
EDIT:
Here is all the steps to replicate your use case:
PUT test
{
"settings" : {
"index" : {
"number_of_shards" : 1,
"number_of_replicas" : 0
}
}
}
PUT test/_mapping/people_name
{
"properties":{
"name":{
"type":"keyword",
"index":"not_analyzed"
},
"status":{
"type":"keyword",
"index":"not_analyzed"
},
"timestamp":{
"type":"date",
"index":"not_analyzed"
}
}
}
POST test/people_name
{
"name": "A",
"status": "success",
"created_at": "2017-08-17"
}
POST test/people_name
{
"name": "A",
"status": "success_2",
"created_at": "2017-06-15"
}
POST test/people_name
{
"name": "B",
"status": "success",
"created_at": "2017-09-15"
}
GET test/people_name/_search
{
"size": 0,
"aggs": {
"components": {
"terms": {
"field": "name"
}
}
}
}
The result of the aggregation is:
{
"took": 3,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 3,
"max_score": 0,
"hits": []
},
"aggregations": {
"components": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "A",
"doc_count": 2
},
{
"key": "B",
"doc_count": 1
}
]
}
}
}