Cloudera JDBC
Driver for Impala
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Release Information
Version: 2.6.3
Date: May 9, 2018
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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
INSTALLING AND USING THE CLOUDERA JDBC DRIVER FOR IMPALA 8
REFERENCING THE JDBCDRIVER LIBRARIES 8
REGISTERING THE DRIVER CLASS 9
BUILDING THE CONNECTION URL 9
CONFIGURING AUTHENTICATION 11
USING NO AUTHENTICATION 11
USING KERBEROS 11
USING USER NAME 12
USING USER NAME AND PASSWORD (LDAP) 13
CONFIGURING KERBEROS AUTHENTICATION FOR WINDOWS 13
USING KERBEROS CONSTRAINED DELEGATION 17
CONFIGURING SSL 19
CONFIGURING SERVER-SIDE PROPERTIES 21
CONFIGURING LOGGING 22
FEATURES 24
SQL TRANSLATION 24
DATA TYPES 24
CATALOG AND SCHEMA SUPPORT 25
WRITE-BACK 25
SECURITY AND AUTHENTICATION 26
INTERFACES AND SUPPORTED METHODS 27
DRIVER CONFIGURATION OPTIONS 84
ALLOWSELFSIGNEDCERTS 84
ASYNCEXECPOLLINTERVAL 84
AUTHMECH 85
CAISSUEDCERTSMISMATCH 85
CATALOGSCHEMASWITCH 85
DEFAULTSTRINGCOLUMNLENGTH 86
DELEGATIONUID 86
KRBAUTHTYPE 86
KRBHOSTFQDN 87
KRBREALM 87
Cloudera JDBC Driver for Impala
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KRBSERVICENAME 87
LOGLEVEL 87
LOGPATH 88
LOWERCASERESULTSETCOLUMNNAME 89
OPTIMIZEDINSERT 89
PREPAREDMETALIMITZERO 89
PWD 90
ROWSFETCHEDPERBLOCK 90
SOCKETTIMEOUT 90
SSL 91
SSLKEYSTORE 91
SSLKEYSTOREPWD 91
SSLTRUSTSTORE 92
SSLTRUSTSTOREPWD 92
STRIPCATALOGNAME 92
SUPPORTTIMEONLYTIMESTAMP 93
UID 93
USENATIVEQUERY 93
USESASL 94
CONTACT US 95
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Cloudera JDBC Driver for Impala
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 24.
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 Data Access Standards on the Simba
Technologies website:https://www.simba.com/resources/data-access-standards-glossary.
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.
Cloudera JDBC Driver for Impala
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About the Cloudera JDBC Driver for Impala
