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我正在使用Hive 0.12，并且我正在尝试来自apache的JDBC。当我尝试运行代码时，出现apache.thrift.TApplicationException。必填字段'client_protocol'未设置
import java.sql.SQLException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.DriverManager;
public class HiveJdbcClient {
private static String driverName = "org.apache.hive.jdbc.HiveDriver";
/**
* @param args
* @throws SQLException
*/
public static void main(String[] args) throws SQLException {
try {
Class.forName(driverName);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
System.exit(1);
}
//replace "hive" here with the name of the user the queries should run as
Connection con = DriverManager.getConnection("jdbc:hive2://localhost:10000/default", "hive", "");
Statement stmt = con.createStatement();
String tableName = "testHiveDriverTable";
stmt.execute("drop table if exists " + tableName);
stmt.execute("create table " + tableName + " (key int, value string)");
// show tables
String sql = "show tables '" + tableName + "'";
System.out.println("Running: " + sql);
ResultSet res = stmt.executeQuery(sql);
if (res.next()) {
System.out.println(res.getString(1));
}
// describe table
sql = "describe " + tableName;
System.out.println("Running: " + sql);
res = stmt.executeQuery(sql);
while (res.next()) {
System.out.println(res.getString(1) + "\t" + res.getString(2));
}
// load data into table
// NOTE: filepath has to be local to the hive server
// NOTE: /tmp/a.txt is a ctrl-A separated file with two fields per line
String filepath = "/tmp/a.txt";
sql = "load data local inpath '" + filepath + "' into table " + tableName;
System.out.println("Running: " + sql);
stmt.execute(sql);
// select * query
sql = "select * from " + tableName;
System.out.println("Running: " + sql);
res = stmt.executeQuery(sql);
while (res.next()) {
System.out.println(String.valueOf(res.getInt(1)) + "\t" + res.getString(2));
}
// regular hive query
sql = "select count(1) from " + tableName;
System.out.println("Running: " + sql);
res = stmt.executeQuery(sql);
while (res.next()) {
System.out.println(res.getString(1));
}
}
}
我进口的所有必要的罐子，当我尝试运行我的代码，我得到以下错误：
org.apache.thrift.TApplicationException: Required field 'client_protocol' is unset! Struct:TOpenSessionReq(client_protocol:null)
我怎样才能解决这个问题？
我解决了它，错误是在hive-jdbc中。它是0.13，我改变它为0.12（我正在运行配置单元0.12） – user3782579
在我的情况下，将其更改为0.12将给出 必填字段'serverProtocolVersion'未设置！ [链接到我发布的问题]（http://stackoverflow.com/questions/27614723/server-protocol-version-is-unset-hive-jdbc） – Count
为我工作。我使用hive14的直线连接（因为一些荒谬的原因，你不能从Hive网站下载旧版本），而我们的prod集群运行在配置单元12上，并且出现这个错误。最后，我将蜂巢二进制文件从prod复制到我的电脑上，它工作正常！ – Kranach