jdbc:hive2://hive-prod.myco.com:10000/sales_db;auth=noSasl Maven (pom.xml):
implementation 'org.apache.hive:hive-jdbc:3.1.3' hive-jdbc pulls Hadoop & Hive dependencies – make sure versions match your server. 4. Full Java Connection Example (No Authentication) For development clusters without Kerberos/LDAP: hive server address java
Use beeline (Hive’s JDBC client) to validate your address: jdbc:hive2://hive-prod
Always match hive-jdbc version with your server’s Hive version, and test first with beeline . | | Transport mode | binary (default) or
beeline -u "jdbc:hive2://<host>:<port>/<db>;principal=hive/_HOST@REALM" If beeline works, your Java code will too. | Component | Value / Pattern | |--------------------|-------------------------------------------------------| | JDBC prefix | jdbc:hive2:// | | Host:Port | <hive-server>:10000 (or HTTP 10001) | | Auth param | auth=noSasl / principal=... / user=... | | Transport mode | binary (default) or transportMode=http | | HA (ZooKeeper) | serviceDiscoveryMode=zooKeeper + ZooKeeper hosts | | Java driver | org.apache.hive.jdbc.HiveDriver (auto-loaded) |
System.setProperty("java.security.krb5.conf", "/etc/krb5.conf"); System.setProperty("sun.security.krb5.debug", "true"); // optional String url = "jdbc:hive2://host:10000/default;principal=hive/host@YOUR.REALM"; Connection conn = DriverManager.getConnection(url); jdbc:hive2://host:10000/default;user=alice;password=secret Or provide via DriverManager.getConnection(url, "alice", "secret") . d) HTTP Mode (for firewalls / load balancers) jdbc:hive2://host:10001/default;transportMode=http;httpPath=cliservice 6. Common Connection Errors & Fixes | Error | Likely cause | Fix | |------------------------------------|---------------------------------------|--------------------------------------| | Could not open client transport | Wrong port / HS2 not running | Check with netstat -tulnp \| grep 10000 | | SASL negotiation failure | Missing auth=noSasl or Kerberos | Use correct auth parameter | | No appropriate protocol | Hive version mismatch (TLS) | Match hive-jdbc version with server | | Peer indicated failure: Unsupported mechanism type PLAIN | Server expects Kerberos/LDAP | Use auth=noSasl only if server allows | 7. Advanced: High Availability (ZooKeeper) If Hive is configured with ZooKeeper service discovery: