Elasticsearch 版本 6.2.4
1. 当对某一type，关闭动态mapping（设为false，非strict）时，插入新的字段是否会存储呢，能否搜索呢？能否排序呢？
创建索引：
PUT test/
{
"mappings": {
"_doc": {
"dynamic":false,
"properties": {
"addTime": {
"type": "integer"
}
}
}
}
}
插入数据：
POST test_xzy/_doc
{
"id":1,
"addTime":"1536476000"
}
查看是否存入：
GET test/_search
得到结果：
{
"took": 0,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test",
"_type": "_doc",
"_id": "4zJ8vWUBHYQn1k6_tB3V",
"_score": 1,
"_source": {
"id": 1,
"addTime": "1536476000"
}
}
]
}
}
可以得知是会存储的。
查看是否可以搜索：
GET test/_search
{
"query": {
"term": {
"id": {
"value": "1"
}
}
}
}
得到结果：
{
"took": 0,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test",
"_type": "_doc",
"_id": "4zJ8vWUBHYQn1k6_tB3V",
"_score": 1,
"_source": {
"id": 1,
"addTime": "1536476000"
}
}
]
}
}
可以得知是可以搜索的。
查看是否可以排序：
GET test/_search
{
"sort": [
{
"id": {
"order": "desc"
}
}
]
}
得到结果：
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": null,
"hits": [
{
"_index": "test",
"_type": "_doc",
"_id": "4zJ8vWUBHYQn1k6_tB3V",
"_score": null,
"_source": {
"id": 1,
"addTime": "1536476000"
},
"sort": [
1
]
}
]
}
}
可以得知是可以排序的。
结论：当对某一type，关闭动态mapping（设为false，非strict）时，插入新的字段是会被存储的，也可以被搜索和排序的。
2. 对于某一字段禁止建立索引之后，搜索结果是否还存在该字段，该字段能否被搜索到？该字段能否用来排序？
创建索引：
PUT test_xzy/
{
"mappings": {
"_doc": {
"properties": {
"addTime": {
"type": "integer",
"index":false
}
}
}
}
}
插入数据：
PUT test_xzy/
{
"mappings": {
"_doc": {
"dynamic":false,
"properties": {
"addTime": {
"type": "integer"
},
"id":{
"type":"integer",
"index":false
}
}
}
}
}
查看是否存入：
GET test/_search
得到结果：
{
"took": 0,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": 1,
"hits": [
{
"_index": "test",
"_type": "_doc",
"_id": "5jKPvWUBHYQn1k6_EB0i",
"_score": 1,
"_source": {
"id": 1,
"addTime": "1536476000"
}
}
]
}
}
可以看到能够存入。
查看是否能够搜索：
GET test/_search
{
"query": {
"term": {
"id": {
"value": "1"
}
}
}
}
得到结果：
{
"error": {
"root_cause": [
{
"type": "query_shard_exception",
"reason": "failed to create query: {\n \"term\" : {\n \"id\" : {\n \"value\" : \"1\",\n \"boost\" : 1.0\n }\n }\n}",
"index_uuid": "cNTINYvNTo6Gxbcq8gnJgA",
"index": "test"
}
],
"type": "search_phase_execution_exception",
"reason": "all shards failed",
"phase": "query",
"grouped": true,
"failed_shards": [
{
"shard": 0,
"index": "test",
"node": "y_oEUnmsTqyzHKrkH54d_w",
"reason": {
"type": "query_shard_exception",
"reason": "failed to create query: {\n \"term\" : {\n \"id\" : {\n \"value\" : \"1\",\n \"boost\" : 1.0\n }\n }\n}",
"index_uuid": "cNTINYvNTo6Gxbcq8gnJgA",
"index": "test",
"caused_by": {
"type": "illegal_argument_exception",
"reason": "Cannot search on field [id] since it is not indexed."
}
}
}
]
},
"status": 400
}
可以得知不能对未索引（index:false）的字段进行搜索。
查看是否能够排序：
GET test/_search
{
"sort": [
{
"id": {
"order": "desc"
}
}
]
}
得到结果：
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 1,
"max_score": null,
"hits": [
{
"_index": "test",
"_type": "_doc",
"_id": "5jKPvWUBHYQn1k6_EB0i",
"_score": null,
"_source": {
"id": 1,
"addTime": "1536476000"
},
"sort": [
1
]
}
]
}
}
得知是可以排序的。
结论：对于某一字段禁止建立索引之后，该字段的值是可以存入的（存在于搜索结果），但是不能搜索的，可以排序的。
原文：https://www.cnblogs.com/xzysaber/p/9614223.html