Kerberos-secured HiveServer2 environments require proper JAAS configuration, a valid Kerberos ticket and the correct Hive JDBC driver. This updated guide explains how to configure SQuirreL SQL with current Hive JDBC drivers, how Kerberos authentication works today and how to avoid the outdated manual classpath and script edits used in early Hadoop distributions. SQuirreL SQL remains a lightweight and reliable JDBC client for connecting to HiveServer2, especially in on-prem Kerberized clusters. While older Hadoop versions required assembling dozens of JAR dependencies manually, modern Hive distributions ship a shaded JDBC driver that simplifies configuration significantly. Prerequisites for Kerberos Authentication Before launching SQuirreL, ensure that you obtain a valid Kerberos ticket: kinit your_user@YOUR.REALM Most Hadoop distributions automatically pick up krb5.conf from system paths ( /etc/krb5.conf on Linux, /Library/Preferences on macOS). If you need to over...
Fractional Chief Architect for Big Data Systems & Distributed Data Processing