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    Updating Java for Cassandra

    By default, DataMiner installs Cassandra with its own Java 8 installation. This is typically located in C:\Program Files\Cassandra\Java\bin. DataMiner deploys Cassandra with Java 1.8.0_91. Cassandra depends on Java 8. We do not recommend deploying Java 11.

    Tip

    A PowerShell script to update the Java version is available at Cassandra Hardening.

    To update the Java version:

    1. Download the latest OpenJDK 8 JRE binaries from the official website.

      Note

      You can download the latest OpenJDK 8 JRE binaries from the OpenJDK Wiki. Make sure to download the Windows x64 archive. For example: OpenJDK8U-jre_x64_windows_8u322b06.zip

    2. Stop the DataMiner Agent.

    3. Stop the Cassandra service.

    4. Rename the C:\Program Files\Cassandra\Java folder to C:\Program Files\Cassandra\Java_bak.

    5. Create a new Java folder in C:\Program Files\Cassandra.

    6. Extract the OpenJDK archive you downloaded and copy the binaries to C:\Program Files\Cassandra\Java.

    7. Start the Cassandra service.

    8. Start the DataMiner Agent.

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