How to import hive data into Elasticsearch?

2 years ago
William Carter
2 minutes

To import Hive data into Elasticsearch (ES), you can follow these steps:

  1. Export the results of a Hive query to a CSV file. You can use the Hive command INSERT OVERWRITE LOCAL DIRECTORY to export the query results to a local directory, and set the output file format to CSV. For example:
INSERT OVERWRITE LOCAL DIRECTORY '/tmp/hive_data'
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ','
SELECT * FROM your_table;

This will store the query results in a CSV file under the directory /tmp/hive_data.

  1. Please provide your input.
  2. Screen
  3. the result
input {
  file {
    path => "/tmp/hive_data/*.csv"
    start_position => "beginning"
    sincedb_path => "/dev/null"
  }
}

filter {
  csv {
    separator => ","
    columns => ["col1", "col2", "col3"]  # 与CSV文件的列对应
  }
}

output {
  elasticsearch {
    hosts => ["localhost:9200"]
    index => "your_index"
  }
}
  1. To run Logstash, use the command “logstash -f your_config.conf” where “your_config.conf” is the path to the configuration file of Logstash.
  2. Wait for Logstash to complete the import. Logstash will automatically read the CSV file and import the data into Elasticsearch.

Before executing these steps, make sure that Hive, Elasticsearch, and Logstash are installed and configured properly, and ensure that the CSV file containing Hive query results matches the path and column names specified in Logstash’s configuration file.

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