一、题目

在集群上有两个索引 index_a 和 index_b，index_a 中有字段 field_a，没有 field_a_desc；index_b 中有 field_a、field_a_desc。其中 index_b 中共有 10 条数据。

要求：

1. reindex 一个索引 index_c，要求包含 index_a 中的所有数据
2. index_c 中新增 field_a_desc 字段，且 field_a 的值与 index_b 索引中 field_a 的值相同。

# 创建索引结构
PUT index_a
{"mappings": {"properties": {"field_a":{"type":"keyword"},"field_a-01":{"type": "keyword"}}}
}PUT index_b
{"mappings": {"properties": {"field_a":{"type": "keyword"},"field_a_desc":{"type": "keyword"}}}
}# 索引数据导入
POST index_a/_bulk
{"index":{"_id":1}}
{"field_a":"a001","field_a_01":"usera01"}
{"index":{"_id":2}}
{"field_a":"a002","field_a_01":"usera02"}
{"index":{"_id":3}}
{"field_a":"a003","field_a_01":"usera03"}
{"index":{"_id":4}}
{"field_a":"a001","field_a_01":"usera011"}
{"index":{"_id":5}}
{"field_a":"a002","field_a_01":"usera012"}
{"index":{"_id":6}}
{"field_a":"a003","field_a_01":"usera013"}
{"index":{"_id":7}}
{"field_a":"a007","field_a_01":"usera021"}
{"index":{"_id":8}}
{"field_a":"a008","field_a_01":"usera022"}
{"index":{"_id":9}}
{"field_a":"a009","field_a_01":"usera023"}
{"index":{"_id":10}}
{"field_a":"a010","field_a_01":"usera031"}
{"index":{"_id":11}}
{"field_a":"a008","field_a_01":"usera032"}
{"index":{"_id":12}}
{"field_a":"a009","field_a_01":"usera033"}POST index_b/_bulk
{"index":{"_id":1}}
{"field_a":"a001","field_a_desc":"money_01"}
{"index":{"_id":2}}
{"field_a":"a002","field_a_desc":"money_02"}
{"index":{"_id":3}}
{"field_a":"a003","field_a_desc":"money_03"}
{"index":{"_id":4}}
{"field_a":"a004","field_a_desc":"money_04"}
{"index":{"_id":5}}
{"field_a":"a005","field_a_desc":"money_05"}
{"index":{"_id":6}}
{"field_a":"a006","field_a_desc":"money_06"}
{"index":{"_id":7}}
{"field_a":"a007","field_a_desc":"money_07"}
{"index":{"_id":8}}
{"field_a":"a008","field_a_desc":"money_08"}
{"index":{"_id":9}}
{"field_a":"a009","field_a_desc":"money_09"}
{"index":{"_id":10}}
{"field_a":"a010","field_a_desc":"money_10"}

1.1 考点

1. Enrich
   • 1.1 创建策略
   • 1.2 执行策略
   • 1.3 创建管道
2. 重建索引

1.2 答案

# 新建enrich 策略
PUT /_enrich/policy/my-policy
{"match": {"indices": "index_b","match_field": "field_a","enrich_fields": ["field_a_desc"]}
}# 执行策略
POST /_enrich/policy/my-policy/_execute# 建立管道
PUT /_ingest/pipeline/my_pipeline
{"processors" : [{"enrich" : {"policy_name": "my-policy","field" : "field_a","target_field": "add_field","max_matches": "1"}},{"rename": {"field": "add_field.field_a_desc","target_field": "field_a_desc","ignore_failure": true}},{"remove": {"field": "add_field","ignore_failure": true}}]
}# 重建索引
POST _reindex
{"source": {"index": "index_a"},"dest": {"index": "index_c","pipeline": "my_pipeline"}
}# 查询结果
GET index_c/_search
{"query": {"match_all": {}}
}

二、题目

在集群上有一个索引 task3，搜索满足以下要求：

1. 字段 a，b，c 三个字段任意一个字段，可以搜到 text “cake mix”
2. highlight 字段 d，加标签
3. sort 字段 e 正序，_score 降序

PUT task3
{"mappings": {"properties": {"a":{"type": "text"},"b":{"type": "text"},"c":{"type": "text"},"d":{"type":"text"},"e":{"type": "keyword"}}}
}POST task3/_bulk
{"index": {}}
{"a":"cake mix", "b":"a", "c":"a", "d":"cake mix", "e":"1"}
{"index": {}}
{"a":"b", "b":"b", "c":"b", "d":"cake mix", "e":"2"}
{"index": {}}
{"a":"c", "b":"c", "c":"cake mix", "d":"cake mix", "e":"3"}

2.1 考点

1. Multi-match
2. highlight
3. sort

2.2 答案

GET task3/_search
{"query": {"multi_match": {"query": "cake mix","fields": ["a", "b", "c"]}},"highlight": {"pre_tags" : ["<tag1>"],"post_tags" : ["</tag1>"],"fields" : {"d": {}}},"sort": [{"e": {"order": "asc"}},{"_score": {"order": "desc"}}]
}