Boot connection to impala database

1. stay pom Integration drive dependency in file

<dependency>
            <groupId>com.cloudera.impala.jdbc</groupId>
            <artifactId>ImpalaJDBC41</artifactId>
            <version>2.5.41</version>
        </dependency>

2. Configure data sources , Driver name ,jdbc Connect url

@Configuration
public class ImpalaSourceConfig {
    @Value("${impala.driver_class_name}")
    private String driverClassName;

    @Value("${impala.jdbc_url}")
    private String jdbcUrl;

    @Bean(name = "impalaSource")
    @Qualifier(value = "impalaSource")
    public DataSource primaryDataSource() {
        HikariConfig config = new HikariConfig();
        config.setDriverClassName(driverClassName);
        config.setJdbcUrl(jdbcUrl);
        HikariDataSource dataSource = new HikariDataSource(config);
        return dataSource;
    }

    @Bean(name = "jdbcTemplateImpala")
    public JdbcTemplate jdbcTemplateImpala(@Qualifier("impalaSource") DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }
}

1)impala.driver_class_name=com.cloudera.impala.jdbc41.Driver

2)impala.jdbc_url=jdbc:impala://192.168.0.1:21050/impala_temp;UseSasl=0;AuthMech=3;UID=impala;PWD=

Explanation of connection parameters ：

UseSasl by 0 Don't use SASL authentication . User credentials will still be passed to the server for Sentry Etc

UseSasl by 1 Use SASL Authentication

This attribute refers to whether SASL With user name and password authentication mechanism （AuthMech=3） Use a combination of .

AuthMech by 3 User name and password

AuthMech by 0 Authentication is not performed （ Default ）

AuthMech by 1 be used for Kerberos

AuthMech by 2 user name

This attribute refers to the authentication mechanism used , Set the attribute to one of the above values .

UID Property to the appropriate user name , To visit Impala The server .

PWD Property to the password corresponding to the user name you provided .

3) Pay attention to case sensitivity in connection configuration , Not in URL Duplicate configuration properties

4) Configure authentication method

(1) There is no need to verify AuthMech Property is set to 0, Examples of connections jdbc:impala://192.168.0.1:21050/impala_temp;AuthMech=0

(2) Use Kerberos To verify , hold AuthMech Property is set to 1

(3) Use user name and password for authentication , hold AuthMech Property is set to 3, Examples of connections jdbc:impala://192.168.0.1:21050/impala_temp;AuthMech=2;UID=impala;PWD=123

(4) Use user name authentication , hold AuthMech Property is set to 2, Examples of connections jdbc:impala://192.168.0.1:21050/impala_temp;AuthMech=2;UID=impala

3. You can use mybatis do sql Operation