Elasticsearch returning wrong results upon query - elasticsearch

Question

I am new to ElasticSearch and was doing some experiments to learn but I figured out that _search query is returning wrong results. I inserted documents to index by using following code
PUT tryDB/_doc/2
{"personId":"2","minor":true,"money":15 }
PUT tryDB/_doc/3
{"personId":"3","minor":true,"money":20 }
PUT tryDB/_doc/4
{"personId":"4","minor":true,"money":25 }
PUT tryDB/_doc/5
{"personId":"5","minor":true,"money":30 }
PUT tryDB/_doc/6
{"personId":"6","minor":true,"money":35 }
PUT tryDB/_doc/7
{"personId":"7","minor":true,"money":40 }
PUT tryDB/_doc/8
{"personId":"8","minor":true,"money":45 }
PUT tryDB/_doc/9
{"personId":"9","minor":true,"money":55 }
PUT tryDB/_doc/10
{"personId":"10","minor":true,"money":60 }
PUT tryDB/_doc/11
{"personId":"11","minor":true,"money":65 }
PUT tryDB/_doc/12
{"personId":"12","minor":true,"money":70 }
PUT tryDB/_doc/13
{"personId":"2","minor":false,"money":80 }
PUT tryDB/_doc/14
{"personId":"2","minor":false,"money":90 }
PUT tryDB/_doc/15
{"personId":"2","minor":false,"money":100 }
PUT tryDB/_doc/16
{"personId":"2","minor":false,"money":10 }
After which I fired up a GET tryDB/_search query to list all the documents, which in turn returns
{
"took" : 4,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 16,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "tryDB",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"personId" : "1",
"minor" : true,
"money" : 10
}
},
{
"_index" : "tryDB",
"_id" : "2",
"_score" : 1.0,
"_source" : {
"personId" : "2",
"minor" : true,
"money" : 15
}
},
{
"_index" : "tryDB",
"_id" : "3",
"_score" : 1.0,
"_source" : {
"personId" : "3",
"minor" : true,
"money" : 20
}
},
{
"_index" : "tryDB",
"_id" : "4",
"_score" : 1.0,
"_source" : {
"personId" : "4",
"minor" : true,
"money" : 25
}
},
{
"_index" : "tryDB",
"_id" : "5",
"_score" : 1.0,
"_source" : {
"personId" : "5",
"minor" : true,
"money" : 30
}
},
{
"_index" : "tryDB",
"_id" : "6",
"_score" : 1.0,
"_source" : {
"personId" : "6",
"minor" : true,
"money" : 35
}
},
{
"_index" : "tryDB",
"_id" : "7",
"_score" : 1.0,
"_source" : {
"personId" : "7",
"minor" : true,
"money" : 40
}
},
{
"_index" : "tryDB",
"_id" : "8",
"_score" : 1.0,
"_source" : {
"personId" : "8",
"minor" : true,
"money" : 45
}
},
{
"_index" : "tryDB",
"_id" : "9",
"_score" : 1.0,
"_source" : {
"personId" : "9",
"minor" : true,
"money" : 55
}
},
{
"_index" : "tryDB",
"_id" : "10",
"_score" : 1.0,
"_source" : {
"personId" : "10",
"minor" : true,
"money" : 60
}
}
]
}
}
Where are the rest 6 documents ?
Now I went ahead and fired up a range based query
GET tryDB/_search
{
"query": {
"range": {
"money": {
"lte":100
}
}
}
}
Which in turn returned
{
"took" : 4,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 3,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "tryDB",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"personId" : "1",
"minor" : true,
"money" : 10
}
},
{
"_index" : "tryDB",
"_id" : "15",
"_score" : 1.0,
"_source" : {
"personId" : "2",
"minor" : false,
"money" : 100
}
},
{
"_index" : "tryDB",
"_id" : "16",
"_score" : 1.0,
"_source" : {
"personId" : "2",
"minor" : false,
"money" : 10
}
}
]
}
}
Which is wrong clearly. Can anyone help me figure out what's going on here?

Answer 1

Where are the rest 6 documents ?
When you do not determine the value of "size", by default elastic returns 10 documents.
Set size like this:
{
"size": 20,
"query": {
"match_all": {}
}
}

Answer 2

POST tryDB/_search
{
"query": {
"bool": {
"filter": [
{
"range": {
"money": {
"lte": 100
}
}
}
]
}
}
}

Answer 3

#rabbitbr Thanks for the quick response!
Hey I figured out the solution (posting here)
Based on the result,
Looks like Elastic Search index money as string.
I tried setting up an explicit mapping to make sure the money field indexed as number.
https://opensearch.org/docs/1.3/opensearch/mappings/
This worked out.