How to bulk import data into the database in ES?

To import data in bulk into the ES (Elasticsearch) database, you can utilize the following methods:

1. Leverage Elasticsearch’s Bulk API: Take advantage of Elasticsearch’s Bulk API to insert data in batches. The Bulk API allows for handling multiple operations at once, such as creating indexes, inserting documents, updating documents, deleting documents, and more. Simply pass the data you want to insert in JSON format to the Bulk API.

Here is an example code demonstrating batch data insertion using the Python Elasticsearch library:

from elasticsearch import Elasticsearch
from elasticsearch.helpers import bulk

# 创建Elasticsearch客户端
es = Elasticsearch()

# 要导入的数据
data = [
    {"title": "文章1", "content": "这是文章1的内容"},
    {"title": "文章2", "content": "这是文章2的内容"},
    {"title": "文章3", "content": "这是文章3的内容"}
]

# 构建批量插入操作列表
actions = []
for doc in data:
    action = {
        "_index": "your_index_name",
        "_type": "your_doc_type",
        "_source": doc
    }
    actions.append(action)

# 使用bulk API执行批量插入操作
bulk(es, actions)

Please remember to replace “your_index_name” and “your_doc_type” with your specific index name and document type.

1. Utilize Logstash: Logstash is an open-source data processing tool that can collect, transform, and send data from multiple sources to Elasticsearch. You can utilize Logstash’s input plugins to read source data (such as files, databases, APIs, etc.), and then use Elasticsearch’s output plugins to import the data into Elasticsearch.

Here is an example configuration file for using Logstash to import data in bulk.

input {
  file {
    path => "/path/to/your/data.json"
    start_position => "beginning"
    sincedb_path => "/dev/null"
  }
}

output {
  elasticsearch {
    hosts => ["localhost:9200"]
    index => "your_index_name"
    document_type => "your_doc_type"
    document_id => "%{id}"
  }
}

Please replace “/path/to/your/data.json” with the path to the data file you want to import. Then use the following command to run Logstash to import the data:

logstash -f your_config_file.conf

Please make sure to replace “your_index_name” and “your_doc_type” with your actual index name and document type.

These methods can all be used to import data in bulk to the Elasticsearch database. Choose the appropriate method based on your needs and use case.