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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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.odpi.specs.runtime.hive;
import org.apache.commons.exec.CommandLine;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.metastore.HiveMetaStoreClient;
import org.apache.hadoop.hive.metastore.IMetaStoreClient;
import org.apache.hadoop.hive.metastore.TableType;
import org.apache.hadoop.hive.metastore.api.FieldSchema;
import org.apache.hadoop.hive.metastore.api.MetaException;
import org.apache.hadoop.hive.metastore.api.SerDeInfo;
import org.apache.hadoop.hive.metastore.api.StorageDescriptor;
import org.apache.hadoop.hive.metastore.api.Table;
import org.apache.hive.hcatalog.data.schema.HCatFieldSchema;
import org.apache.hive.hcatalog.data.schema.HCatSchema;
import org.apache.thrift.TException;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
public class TestHCatalog {
private static final String JOBJAR = "odpi.test.hive.hcat.job.jar";
private static final String HCATCORE = "odpi.test.hive.hcat.core.jar";
private static final Log LOG = LogFactory.getLog(TestHCatalog.class.getName());
private static IMetaStoreClient client = null;
private static HiveConf conf;
private static HCatSchema inputSchema;
private static HCatSchema outputSchema;
private Random rand;
@BeforeClass
public static void connect() throws MetaException {
if (JdbcConnector.testActive(JdbcConnector.TEST_HCATALOG, "Test HCatalog ")) {
String hiveConfDir = JdbcConnector.getProperty(JdbcConnector.HIVE_CONF_DIR,
"Hive conf directory ");
String hadoopConfDir = JdbcConnector.getProperty(JdbcConnector.HADOOP_CONF_DIR,
"Hadoop conf directory ");
conf = new HiveConf();
String fileSep = System.getProperty("file.separator");
conf.addResource(new Path(hadoopConfDir + fileSep + "core-site.xml"));
conf.addResource(new Path(hadoopConfDir + fileSep + "hdfs-site.xml"));
conf.addResource(new Path(hadoopConfDir + fileSep + "yarn-site.xml"));
conf.addResource(new Path(hadoopConfDir + fileSep + "mapred-site.xml"));
conf.addResource(new Path(hiveConfDir + fileSep + "hive-site.xml"));
client = new HiveMetaStoreClient(conf);
}
}
@Before
public void checkIfActive() {
Assume.assumeTrue(JdbcConnector.testActive(JdbcConnector.TEST_HCATALOG, "Test HCatalog "));
rand = new Random();
}
@Test
public void hcatInputFormatOutputFormat() throws TException, IOException, ClassNotFoundException,
InterruptedException, URISyntaxException {
// Create a table to write to
final String inputTable = "odpi_hcat_input_table_" + rand.nextInt(Integer.MAX_VALUE);
SerDeInfo serde = new SerDeInfo("default_serde",
conf.getVar(HiveConf.ConfVars.HIVEDEFAULTSERDE), new HashMap<String, String>());
FieldSchema schema = new FieldSchema("line", "string", "");
inputSchema = new HCatSchema(Collections.singletonList(new HCatFieldSchema(schema.getName(),
HCatFieldSchema.Type.STRING, schema.getComment())));
StorageDescriptor sd = new StorageDescriptor(Collections.singletonList(schema), null,
"org.apache.hadoop.mapred.TextInputFormat",
"org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat", false, 0, serde, null, null,
new HashMap<String, String>());
Table table = new Table(inputTable, "default", "me", 0, 0, 0, sd, null,
new HashMap<String, String>(), null, null, TableType.MANAGED_TABLE.toString());
client.createTable(table);
final String outputTable = "odpi_hcat_output_table_" + rand.nextInt(Integer.MAX_VALUE);
sd = new StorageDescriptor(Arrays.asList(
new FieldSchema("word", "string", ""),
new FieldSchema("count", "int", "")),
null, "org.apache.hadoop.mapred.TextInputFormat",
"org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat", false, 0, serde, null, null,
new HashMap<String, String>());
table = new Table(outputTable, "default", "me", 0, 0, 0, sd, null,
new HashMap<String, String>(), null, null, TableType.MANAGED_TABLE.toString());
client.createTable(table);
outputSchema = new HCatSchema(Arrays.asList(
new HCatFieldSchema("word", HCatFieldSchema.Type.STRING, ""),
new HCatFieldSchema("count", HCatFieldSchema.Type.INT, "")));
// LATER Could I use HCatWriter here and the reader to read it?
// Write some stuff into a file in the location of the table
table = client.getTable("default", inputTable);
String inputFile = table.getSd().getLocation() + "/input";
Path inputPath = new Path(inputFile);
FileSystem fs = FileSystem.get(conf);
FSDataOutputStream out = fs.create(inputPath);
out.writeChars("Mary had a little lamb\n");
out.writeChars("its fleece was white as snow\n");
out.writeChars("and everywhere that Mary went\n");
out.writeChars("the lamb was sure to go\n");
out.close();
Map<String, String> env = new HashMap<>();
env.put("HADOOP_CLASSPATH", System.getProperty(HCATCORE, ""));
Map<String, String> results = HiveHelper.execCommand(new CommandLine("hive")
.addArgument("--service")
.addArgument("jar")
.addArgument(System.getProperty(JOBJAR))
.addArgument(HCatalogMR.class.getName())
.addArgument("-it")
.addArgument(inputTable)
.addArgument("-ot")
.addArgument(outputTable)
.addArgument("-is")
.addArgument(inputSchema.getSchemaAsTypeString())
.addArgument("-os")
.addArgument(outputSchema.getSchemaAsTypeString()), env);
LOG.info(results.toString());
Assert.assertEquals("HCat job failed", 0, Integer.parseInt(results.get("exitValue")));
client.dropTable("default", inputTable);
client.dropTable("default", outputTable);
}
}
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