Loading Data with hawq load

The HAWQ hawq load utility loads data using readable external tables and the HAWQ parallel file server ( gpfdist or gpfdists). It handles parallel file-based external table setup and allows users to configure their data format, external table definition, and gpfdist or gpfdists setup in a single configuration file.

To use hawq load

  1. Ensure that your environment is set up to run hawq load. Some dependent files from your HAWQ /> installation are required, such as gpfdist and Python, as well as network access to the HAWQ segment hosts.
  2. Create your load control file. This is a YAML-formatted file that specifies the HAWQ connection information, gpfdist configuration information, external table options, and data format.

    For example:

    DATABASE: ops
    USER: gpadmin
    HOST: mdw-1
    PORT: 5432
        - SOURCE:
               - etl1-1
               - etl1-2
               - etl1-3
               - etl1-4
             PORT: 8081
               - /var/load/data/*
        - COLUMNS:
               - name: text
               - amount: float4
               - category: text
               - description: text
               - date: date
        - FORMAT: text
        - DELIMITER: '|'
        - ERROR_LIMIT: 25
        - ERROR_TABLE: payables.err_expenses
        - TABLE: payables.expenses
        - MODE: INSERT
       - BEFORE: "INSERT INTO audit VALUES('start', current_timestamp)"
       - AFTER: "INSERT INTO audit VALUES('end', current_timestamp)"
  3. Run hawq load, passing in the load control file. For example:

    $ hawq load -f my_load.yml