Cloudera JDBC Driver for Impala
Version 2.5.32
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Release Information
Version: 2.5.32
Date: June 16, 2016
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Cloudera JDBC Driver for Impala
Table of Contents
ABOUT THE CLOUDERA JDBC DRIVER FOR IMPALA 5
SYSTEM REQUIREMENTS 6
CLOUDERA JDBC DRIVER FOR IMPALA FILES 7
USING THE CLOUDERA JDBC DRIVER FOR IMPALA 8
SETTING THE CLASS PATH 8
INITIALIZING THE DRIVER CLASS 8
BUILDING THE CONNECTION URL 9
CONFIGURING AUTHENTICATION 11
USING NO AUTHENTICATION 11
USING KERBEROS 11
USING USER NAME 12
USING USER NAME AND PASSWORD 12
CONFIGURING KERBEROS AUTHENTICATION FOR WINDOWS 12
CONFIGURING SSL 18
CONFIGURING SERVER-SIDE PROPERTIES 19
CONFIGURING LOGGING 20
FEATURES 22
SQL TRANSLATION 22
DATA TYPES 22
CATALOG AND SCHEMA SUPPORT 23
INTERFACES AND SUPPORTED METHODS 23
CONTACT US 79
DRIVER CONFIGURATION OPTIONS 80
ALLOWSELFSIGNEDCERTS 80
AUTHMECH 80
CAISSUEDCERTNAMESMISMATCH 81
CATALOGSCHEMASWITCH 81
DEFAULTSTRINGCOLUMNLENGTH 81
DELEGATIONUID 82
KRBHOSTFQDN 82
KRBREALM 82
KRBSERVICENAME 82
LOGLEVEL 83
LOGPATH 84
LOWERCASERESULTSETCOLUMNNAME 84
Cloudera JDBC Driver for Impala
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About the Cloudera JDBC Driver for Impala
The Cloudera JDBC Driver for Impala is used for direct SQL and Impala SQL access to Apache
Hadoop / Impala distributions, enabling Business Intelligence (BI), analytics, and reporting on
Hadoop / Impala-based data. The driver efficiently transforms an application’s SQL query into the
equivalent form in Impala SQL, which is a subset of SQL-92. If an application is Impala-aware, then
the driver is configurable to pass the query through to the database for processing. The driver
interrogates Impala to obtain schema information to present to a SQL-based application. Queries,
including joins, are translated from SQL to Impala SQL. For more information about the
differences between Impala SQL and SQL, see "Features" on page 22.
The Cloudera JDBC Driver for Impala complies with the JDBC 4.0 and 4.1 data standards. JDBC is
one of the most established and widely supported APIs for connecting to and working with
databases. At the heart of the technology is the JDBC driver, which connects an application to the
database. For more information about JDBC, see the Data Access Standards Glossary:
http://www.simba.com/resources/data-access-standards-library.
This guide is suitable for users who want to access data residing within Impala from their desktop
environment. Application developers might also find the information helpful. Refer to your
application for details on connecting via JDBC.
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About the Cloudera JDBC Driver for Impala
