es修改索引数据类型

es中是不允许对索引修改,所以只有先创建一个新索引,将旧索引数据移动到新索引中,然后再删除旧索引,再将新索引的数据迁移到旧索引名下,操作方式如下:

# 删除原有的template
DELETE _template/app_template

# 创建新template
POST _template/app_template
{
  "index_patterns": [
    "app-*"
  ],
  "settings": {
    "number_of_shards": 5,
    "refresh_interval": "60s"
  },
  "mappings": {
    "_source": {
      "enabled": true
    },
    "properties": {
      "time": {
        "type": "long"
      },
      "element": {
        "properties": {
          "element_id": {
            "type": "keyword"
          }
        }
      },
      "uuid": {
        "type": "keyword"
      },
      "app_user_id": {
        "type": "keyword"
      },
      "event_type": {
        "type": "keyword"
      },
      "event_name": {
        "type": "keyword"
      },
      "path": {
        "type": "keyword"
      },
      "sdk_version": {
        "type": "integer"
      },
      "app_verison": {
        "type": "keyword"
      }
    }
  }
}

# 创建新索引
PUT /app-9e66e6c0-new

# 将旧索引迁移到新索引下
POST /_reindex
{
  "source": {
    "index": "app-9e66e6c0"
  },
  "dest": {
    "index": "app-9e66e6c0-new"
  }
}

# 删除旧索引
DELETE /app-9e66e6c0

# 将新索引数据迁移到旧索引名下
POST /_reindex
{
  "source": {
    "index": "app-9e66e6c0-new"
  },
  "dest": {
    "index": "app-9e66e6c0"
  }
}

# 删除新索引
DELETE /app-9e66e6c0-new

# 查看索引结构
GET app-9e66e6c0