Question

我正在尝试从Hive表中检索记录。为此，我用Java编写了以下连接。

public static Connection getHiveConnection() throws IOException, SQLException {
    System.out.println("Preparing Hive connection1");
    Configuration conf = new Configuration();
    conf.set("hadoop.security.authentication", "Kerberos");

    System.setProperty("java.security.krb5.kdc", "ip-x-x-x-x.bc9.internal");
    System.setProperty("java.security.krb5.realm", "ABCDEV.COM");
    UserGroupInformation.loginUserFromKeytab("username@ABCDEV.COM", "/home/username/username.keytab");
    // UserGroupInformation.setConfiguration(conf);
    System.out.println("Kerberos Connected");
    // Hive Connection
    try {
        Class.forName("org.apache.hive.jdbc.HiveDriver");
        if((hiveConnection == null) || hiveConnection.isClosed()) {
            hiveConnection = DriverManager.getConnection("jdbc:hive2://x.x.x.x.x:10500/schema;principal=hive/_HOST@ABCDEV.COM", "user", "pwd");
            return hiveConnection;
        } else {
        return hiveConnection;
        }
    } catch (ClassNotFoundException e) {
        e.printStackTrace();
        return null;
    } catch (SQLException e) {
        e.printStackTrace();
        return null;
    }
}

当我尝试使用此类的连接时，在下面的其他类中：

Connection hiveCon = (Connection) DbManager.getHiveConnection();
PreparedStatement hive_pstmnt =  hiveCon.prepareStatement(hiveCountQuery);
ResultSet hiveRs = hive_pstmnt.executeQuery();

我得到了例外：

Preparing Hive connection1
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Kerberos Connected
java.sql.SQLException: Could not open client transport with JDBC Uri: jdbc:hive2://x.x.x.x.x:10500/schema;principal=hive/_HOST@ABCDEV.COM: GSS initiate failed
Caused by: org.apache.thrift.transport.TTransportException: GSS initiate failed

在代码中，我注释了一行：UserGroupInformation.setConfiguration（conf）;如果我删除注释并执行代码，我会得到一个不同的例外：

Exception in thread "main" java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)
Caused by: java.lang.IllegalArgumentException: Invalid attribute value for hadoop.security.authentication of Kerberos
        at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:200)
        at org.apache.hadoop.security.UserGroupInformation.setConfiguration(UserGroupInformation.java:227)
        at com.dbconnections.gphive.DbManager.getHiveConnection(DbManager.java:24)

我已经完成了kinit并生成了票证，以确保票证有效时间段。任何人都可以让我知道我在这里做的错误是什么，以便纠正代码。

Answer 1

这是kerberos问题。该堡垒未在堡垒中生成。一旦我创建它，jar就会成功运行。

Java - GSS启动失败的异常，由以下原因引起：org.apache.thrift.transport.TTransportException：GSS启动失败

1 个答案: