Connections to Apache Hive

HiveServer modes of operation

HDP 3.0 supports a number of modes for interacting with Hive, including Ranger-based authorization.

Table 1. HiveServer modes of operation
Operating Mode	Description
Embedded	The Beeline client and the Hive installation reside on the same host machine. No TCP connectivity is required.
Remote	Use remote mode to support multiple, concurrent clients executing queries against the same remote Hive installation. Remote transport mode supports authentication with LDAP and Kerberos. It also supports encryption with SSL. TCP connectivity is required.

As administrator, you can start HiveServer in one of the following transport modes:

Table 2. HiveServer2 Transport Modes
Transport Mode	Description
TCP	HiveServer uses TCP transport for sending and receiving Thrift RPC messages.
HTTP	HiveServer uses HTTP transport for sending and receiving Thrift RPC messages.

While running in TCP transport mode, HiveServer supports the following authentication schemes:

Table 3. Authentication Schemes with TCP Transport Mode
Authentication Scheme	Description
Kerberos	A network authentication protocol which operates that uses the concept of 'tickets' to allow nodes in a network to securely identify themselves. Administrators must specify hive.server2.authentication=kerberos in the hive-site.xml configuration file to use this authentication scheme.
LDAP	The Lightweight Directory Access Protocol, an application-layer protocol that uses the concept of 'directory services' to share information across a network. Administrators must specify hive.server2.authentication=ldap in the hive-site.xml configuration file to use this type of authentication.
PAM	Pluggable Authentication Modules, or PAM, allow administrators to integrate multiple authentication schemes into a single API. Administrators must specify hive.server2.authentication=pam in the hive-site.xml configuration file to use this authentication scheme.
Custom	Authentication provided by a custom implementation of the org.apache.hive.service.auth.PasswdAuthenticationProvider interface. The implementing class must be available in the classpath for HiveServer and its name provided as the value of the hive.server2.custom.authentication.class property in the hive-site.xml configuration property file.
None	The Beeline client performs no authentication with HiveServer2. Administrators must specify hive.server2.authentication=none in the hive-site.xml configuration file to use this authentication scheme.