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RapidMiner からImpala Data にデータ連携

RapidMiner Studio の標準コンポーネントおよびデータソース設定ウィザードでImpala data を連携します。

この記事では、CData JDBC driver for Impala をRapidMiner のプロセスに簡単に統合する方法を説明します。ここでは、Impala にCData JDBC ドライバーを使用して、Impala data をRapidMiner のプロセスに転送します。

JDBC データソースとしてRapidMiner のImpala に接続

You can follow the procedure below to establish a JDBC connection to Impala:

  1. Add a new database driver for Impala:Click Connections -> Manage Database Drivers.
  2. In the resulting wizard, click the Add button and enter a name for the connection.
  3. Enter the prefix for the JDBC URL: jdbc:apacheimpala:
  4. Enter the path to the cdata.jdbc.apacheimpala.jar file, located in the lib subfolder of the installation directory.
  5. Enter the driver class: cdata.jdbc.apacheimpala.ApacheImpalaDriver
  6. Create a new Impala connection:Click Connections -> Manage Database Connections.
  7. Enter a name for your connection.
  8. For Database System, select the Impala driver you configured previously.
  9. Enter your connection string in the Host box.

    In order to connect to Apache Impala, set the Server, Port, and ProtocolVersion. You may optionally specify a default Database. To connect using alternative methods, such as NOSASL, LDAP, or Kerberos, refer to the online Help documentation.

    ビルトイン接続文字列デザイナー

    For assistance in constructing the JDBC URL, use the connection string designer built into the Impala JDBC Driver.Either double-click the JAR file or execute the jar file from the command-line.

    java -jar cdata.jdbc.apacheimpala.jar

    Fill in the connection properties and copy the connection string to the clipboard.

    A typical connection string is below:

    Server=127.0.0.1;Port=21050;
  10. Enter your username and password if necessary.

You can now use your Impala connection with the various RapidMiner operators in your process.To retrieve Impala data, drag the Retrieve operator from the Operators view. With the Retrieve operator selected, you can then define which table to retrieve in the Parameters view by clicking the folder icon next to the "repository entry."In the resulting Repository Browser, you can expand your connection node to select the desired example set.

Finally, wire the output to the Retrieve process to a result, and run the process to see the Impala data.

 
 
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