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Synchronizing Data From EnOS Hive to the Target Database


You can synchronize data in EnOS Hive to the target databases for data analysis.


EnOS enables the synchronization of data in EnOS Hive to the following databases.

  • External MySQL database
  • External PostgreSQL database
  • External ClickHouse database

Note

As the Data Report service has been deprecated, the Data Synchronization service no longer supports integrating data from EnOS Hive to the ReportDB.

Before You Start

Ensure that you have created the target table before synchronizing.

  • If you are synchronizing data to an external MySQL database, you must establish and verify the connection in Data Source Registration and create a target table. For more information, see Registering a MySQL or SQL Server Data Source.
  • If you are synchronizing data to an external PostgreSQL database, you must establish and verify the connection in Data Source Registration and create a target table. For more information, see Registering a PostgreSQL Data Source.
  • If you are synchronizing data to an external ClickHouse database, you must establish and verify the connection in Data Source Registration and create a target table. For more information, see Registering a ClickHouse Data Source.

Step 1: Create a Data Synchronization Task

  1. In the EnOS Management Console, select Data Synchronization from the left navigation menu.
  2. Click + above the task list or click New Synchronization Task in the blank page.
  3. In the New Data Synchronization Task window, complete the basic settings for the task.
    • Mode: Select Create to create a task from scratch. If you wish to Import task config, go to Creating a Task by Importing an Existing Configuration.
    • Name: Enter the name of the data synchronization task.
    • Sync Type: Select Structured data.
    • Scheduling Type: Select Manual scheduling.
    • Description: Provide a description for the data synchronization task.
    • Select Dir: Select the directory to save the task.
  4. Click OK to create the data synchronization task.

Step 2: Select the Hive Data Source

To select and synchronize data to external MySQL database, PostgreSQL, or ClickHouse database, follow the steps below.

  1. Data Source Type: Select HIVE(EnOS).

  2. Source Table: Select the data table to be synchronized.

  3. (Optional) Specify the Partition to be synchronized through the following methods. If not specified, all data is synchronized to the target data table.

    • Fixed value: If 20180101 is entered, for example, the data will be automatically synchronized to the 20180101 partition of the target table.
    • Placeholder: You can use system reserved or custom parameters such as the system variable ${cal_dt}. For more information about the usage of system variables, see Supported System Variables.

  4. (Optional) Click Data Preview. The system will display 5 random data entries by default.

    _images/hive_source.png

  5. Click Next to select the target table.

Step 3: Select the Target Table

You can synchronize data from Hive to an external MySQL database, PostgreSQL database, or ClickHouse database.


  • To synchronize the data to an external MySQL database, follow the steps below.

    1. Data Source Type: Select MYSQL.

    2. Data Sources: Select the target database that the data is synchronized to.

    3. Table Name: Select the target table that the data is synchronized to.

    4. Data Writing Rule: Select Overwrite existing data or Do not overwrite existing data according to your requirements.

      _images/hive_target.png

    5. Click Next.


  • To synchronize data to an external PostgreSQL database, follow the steps below.
    1. Data Source Type: Select POSTGRESQL.
    2. Data Sources: Select the target database that the data is synchronized to.
    3. Schema: Select the schema of the target database.
    4. Table Name: Select the target table that the data is synchronized to.
    5. Data Writing Rule: Select Overwrite existing data or Do not overwrite existing data according to your requirements.
    6. Click Next.


  • To synchronize data to an external ClickHouse database, follow the steps below.
    1. Data Source Type: Select CLICKHOUSE.
    2. Data Sources: Select the target database that the data is synchronized to.
    3. Table Name: Select the target table that the data is synchronized to.
    4. Data Writing Rule: Select Overwrite existing data or Do not overwrite existing data according to your requirements.
    5. Click Next.

Next Step

You can continue to configure the task scheduling settings, parameter settings, field mapping configuration, and channel control. For more information, see the following.