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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.bigtop.itest.hivesmoke;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Date;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertEquals;
import org.apache.bigtop.itest.shell.Shell;
public class TestJdbcDriver {
public static String driverName = "org.apache.hadoop.hive.jdbc.HiveDriver";
public static String hiveserver_url = "jdbc:hive://localhost:10000/default";
public static Shell sh = new Shell("/bin/bash -s");
public static String testDir = "/tmp/hive-jdbc." + (new Date().getTime());
public static String hiveserver_pid;
private Connection con;
@BeforeClass
public static void setUp() throws ClassNotFoundException, InterruptedException {
Class.forName(driverName);
sh.exec("hadoop fs -mkdir " + testDir);
assertTrue("Could not create test directory", sh.getRet() == 0);
sh.exec("hadoop fs -copyFromLocal a.txt " + testDir + "/a.txt");
assertTrue("Could not copy local file to test directory", sh.getRet() == 0);
// start hiveserver in background and remember the pid
sh.exec("(HIVE_PORT=10000 hive --service hiveserver > /dev/null 2>&1 & echo $! ) 2> /dev/null");
hiveserver_pid = sh.getOut().get(0);
Thread.sleep(1000); // allow time for hiveserver to be up
}
@Before
public void getConnection() throws SQLException {
//System.out.println(hiveserver_url);
con = DriverManager.getConnection(hiveserver_url, "", "");
//System.out.println("JDBC connection is " +
// (con == null ? "not instantiated." : "instantiated."));
}
@After
public void closeConnection() throws SQLException {
if (con != null)
con.close();
}
@AfterClass
public static void tearDown() {
sh.exec("hadoop fs -rmr -skipTrash " + testDir);
sh.exec("kill -9 " + hiveserver_pid);
}
@Test
public void testCreate() throws SQLException {
Statement stmt = con.createStatement();
String tableName = "hive_jdbc_driver_test";
stmt.executeQuery("drop table " + tableName);
ResultSet res = stmt.executeQuery("create table " + tableName +
" (key int, value string)");
// show tables
String sql = "show tables";
//System.out.println("executing: " + sql);
res = stmt.executeQuery(sql);
boolean tableCreated = false;
while (res.next()) {
String tab_name = res.getString(1);
//System.out.println(tab_name);
if (tab_name.equals(tableName))
tableCreated = true;
}
assertTrue("table " + tableName + " does not appear to be created",
tableCreated);
// describe table
sql = "describe " + tableName;
//System.out.println("executing: " + sql);
res = stmt.executeQuery(sql);
List<String> colNames = new ArrayList<String>();
List<String> dataTypes = new ArrayList<String>();
while (res.next()) {
String col_name = res.getString(1);
String data_type = res.getString(2);
colNames.add(col_name);
dataTypes.add(data_type);
//System.out.println(col_name + "\t" + data_type);
}
assertEquals("table should have two columns", 2, colNames.size());
assertEquals("key", colNames.get(0));
assertEquals("value", colNames.get(1));
assertEquals("int", dataTypes.get(0));
assertEquals("string", dataTypes.get(1));
// load data into table
String filepath = testDir + "/a.txt"; // this is an hdfs filepath
sql = "load data inpath '" + filepath + "' into table " + tableName;
//System.out.println("executing: " + sql);
res = stmt.executeQuery(sql);
// select
sql = "select * from " + tableName;
//System.out.println("executing: " + sql);
res = stmt.executeQuery(sql);
List<Integer> keys = new ArrayList<Integer>();
List<String> values = new ArrayList<String>();
while (res.next()) {
int key = res.getInt(1);
String value = res.getString(2);
keys.add(new Integer(key));
values.add(value);
//System.out.println("" + key + "\t" + value);
}
assertEquals("table should have two rows", 2, keys.size());
assertEquals(new Integer(1), keys.get(0));
assertEquals(new Integer(2), keys.get(1));
assertEquals("foo", values.get(0));
assertEquals("bar", values.get(1));
}
}
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