Elastic Search Sorting - - elasticsearch

Question

My Data looks like this After sorting : Below is the response after sorting. But this is not the expected output.
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"failed": 0
},
"hits": {
"total": 8,
"max_score": null,
"hits": [
{
"_index": "test",
"_type": "size",
"_id": "AWVVTy-v9pbhY5QtJPGe",
"_score": null,
"_source": {
"e_size": "5"
},
"sort": [
"5"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVTmY89pbhY5QtJPGa",
"_score": null,
"_source": {
"e_size": "3"
},
"sort": [
"3"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVTxXe9pbhY5QtJPGd",
"_score": null,
"_source": {
"e_size": "100"
},
"sort": [
"100"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVTpYJ9pbhY5QtJPGc",
"_score": null,
"_source": {
"e_size": "10-"
},
"sort": [
"10-"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVTk1x9pbhY5QtJPGY",
"_score": null,
"_source": {
"e_size": "1-7"
},
"sort": [
"1-7"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVTnsm9pbhY5QtJPGb",
"_score": null,
"_source": {
"e_size": "1-6"
},
"sort": [
"1-6"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVTjAq9pbhY5QtJPGX",
"_score": null,
"_source": {
"e_size": "1-2"
},
"sort": [
"1-2"
]
},
{
"_index": "test",
"_type": "size",
"_id": "AWVVThkT9pbhY5QtJPGW",
"_score": null,
"_source": {
"e_size": "1"
},
"sort": [
"1"
]
}
]
}
}
Below is the sort used to get the results.
{
"sort": [{
"e_size": {
"order": "desc"
}
}]
}
e_size type is "String" and index is "not_analyzed"
How to fix this sort issue. Do we need to use any analyzer for this. Or e_size data type should be different.

Answer 1

It has sorted it correctly. You can try to sort those strings yourself and you would get the same result.
Example:
["100", "10-"]
here "0" < "-" so that's why "10-" comes after "100" and so on. you can think of it as how do you find some words in a dictionary.
Either make e_size a number or use any different series of string for each e_size