/**
* 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.hcatalog.api;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.conf.HiveConf;
import org.apache.hadoop.hive.metastore.HiveMetaStore;
import org.apache.hadoop.hive.metastore.api.PartitionEventType;
import org.apache.hadoop.hive.ql.io.IgnoreKeyTextOutputFormat;
import org.apache.hadoop.hive.ql.io.RCFileInputFormat;
import org.apache.hadoop.hive.ql.io.RCFileOutputFormat;
import org.apache.hadoop.hive.serde2.columnar.ColumnarSerDe;
import org.apache.hadoop.mapred.TextInputFormat;
import org.apache.hcatalog.cli.SemanticAnalysis.HCatSemanticAnalyzer;
import org.apache.hadoop.hive.conf.HiveConf.ConfVars;
import org.apache.hcatalog.common.HCatConstants;
import org.apache.hcatalog.common.HCatException;
import org.apache.hcatalog.data.schema.HCatFieldSchema;
import org.apache.hcatalog.data.schema.HCatFieldSchema.Type;
import org.apache.hcatalog.NoExitSecurityManager;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertArrayEquals;
public class TestHCatClient {
private static final Logger LOG = LoggerFactory.getLogger(TestHCatClient.class);
private static final String msPort = "20101";
private static HiveConf hcatConf;
private static SecurityManager securityManager;
private static class RunMS implements Runnable {
@Override
public void run() {
try {
HiveMetaStore.main(new String[]{"-v", "-p", msPort});
} catch (Throwable t) {
LOG.error("Exiting. Got exception from metastore: ", t);
}
}
}
@AfterClass
public static void tearDown() throws Exception {
LOG.info("Shutting down metastore.");
System.setSecurityManager(securityManager);
}
@BeforeClass
public static void startMetaStoreServer() throws Exception {
Thread t = new Thread(new RunMS());
t.start();
Thread.sleep(40000);
securityManager = System.getSecurityManager();
System.setSecurityManager(new NoExitSecurityManager());
hcatConf = new HiveConf(TestHCatClient.class);
hcatConf.set("hive.metastore.local", "false");
hcatConf.setVar(HiveConf.ConfVars.METASTOREURIS, "thrift://localhost:"
+ msPort);
hcatConf.setIntVar(HiveConf.ConfVars.METASTORETHRIFTCONNECTIONRETRIES, 3);
hcatConf.set(HiveConf.ConfVars.SEMANTIC_ANALYZER_HOOK.varname,
HCatSemanticAnalyzer.class.getName());
hcatConf.set(HiveConf.ConfVars.PREEXECHOOKS.varname, "");
hcatConf.set(HiveConf.ConfVars.POSTEXECHOOKS.varname, "");
hcatConf.set(HiveConf.ConfVars.HIVE_SUPPORT_CONCURRENCY.varname,
"false");
System.setProperty(HiveConf.ConfVars.PREEXECHOOKS.varname, " ");
System.setProperty(HiveConf.ConfVars.POSTEXECHOOKS.varname, " ");
}
@Test
public void testBasicDDLCommands() throws Exception {
String db = "testdb";
String tableOne = "testTable1";
String tableTwo = "testTable2";
HCatClient client = HCatClient.create(new Configuration(hcatConf));
client.dropDatabase(db, true, HCatClient.DropDBMode.CASCADE);
HCatCreateDBDesc dbDesc = HCatCreateDBDesc.create(db).ifNotExists(false)
.build();
client.createDatabase(dbDesc);
List<String> dbNames = client.listDatabaseNamesByPattern("*");
assertTrue(dbNames.contains("default"));
assertTrue(dbNames.contains(db));
HCatDatabase testDb = client.getDatabase(db);
assertTrue(testDb.getComment() == null);
assertTrue(testDb.getProperties().size() == 0);
String warehouseDir = System
.getProperty(ConfVars.METASTOREWAREHOUSE.varname, "/user/hive/warehouse");
assertTrue(testDb.getLocation().equals(
"file:" + warehouseDir + "/" + db + ".db"));
ArrayList<HCatFieldSchema> cols = new ArrayList<HCatFieldSchema>();
cols.add(new HCatFieldSchema("id", Type.INT, "id comment"));
cols.add(new HCatFieldSchema("value", Type.STRING, "value comment"));
HCatCreateTableDesc tableDesc = HCatCreateTableDesc
.create(db, tableOne, cols).fileFormat("rcfile").build();
client.createTable(tableDesc);
HCatTable table1 = client.getTable(db, tableOne);
assertTrue(table1.getInputFileFormat().equalsIgnoreCase(
RCFileInputFormat.class.getName()));
assertTrue(table1.getOutputFileFormat().equalsIgnoreCase(
RCFileOutputFormat.class.getName()));
assertTrue(table1.getSerdeLib().equalsIgnoreCase(
ColumnarSerDe.class.getName()));
assertTrue(table1.getCols().equals(cols));
// Since "ifexists" was not set to true, trying to create the same table
// again
// will result in an exception.
try {
client.createTable(tableDesc);
} catch (HCatException e) {
assertTrue(e.getMessage().contains(
"AlreadyExistsException while creating table."));
}
client.dropTable(db, tableOne, true);
HCatCreateTableDesc tableDesc2 = HCatCreateTableDesc.create(db,
tableTwo, cols).build();
client.createTable(tableDesc2);
HCatTable table2 = client.getTable(db, tableTwo);
assertTrue(table2.getInputFileFormat().equalsIgnoreCase(
TextInputFormat.class.getName()));
assertTrue(table2.getOutputFileFormat().equalsIgnoreCase(
IgnoreKeyTextOutputFormat.class.getName()));
assertTrue(table2.getLocation().equalsIgnoreCase(
"file:" + warehouseDir + "/" + db + ".db/" + tableTwo));
client.close();
}
@Test
public void testPartitionsHCatClientImpl() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String dbName = "ptnDB";
String tableName = "pageView";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
HCatCreateDBDesc dbDesc = HCatCreateDBDesc.create(dbName)
.ifNotExists(true).build();
client.createDatabase(dbDesc);
ArrayList<HCatFieldSchema> cols = new ArrayList<HCatFieldSchema>();
cols.add(new HCatFieldSchema("userid", Type.INT, "id columns"));
cols.add(new HCatFieldSchema("viewtime", Type.BIGINT,
"view time columns"));
cols.add(new HCatFieldSchema("pageurl", Type.STRING, ""));
cols.add(new HCatFieldSchema("ip", Type.STRING,
"IP Address of the User"));
ArrayList<HCatFieldSchema> ptnCols = new ArrayList<HCatFieldSchema>();
ptnCols.add(new HCatFieldSchema("dt", Type.STRING, "date column"));
ptnCols.add(new HCatFieldSchema("country", Type.STRING,
"country column"));
HCatCreateTableDesc tableDesc = HCatCreateTableDesc
.create(dbName, tableName, cols).fileFormat("sequencefile")
.partCols(ptnCols).build();
client.createTable(tableDesc);
Map<String, String> firstPtn = new HashMap<String, String>();
firstPtn.put("dt", "04/30/2012");
firstPtn.put("country", "usa");
HCatAddPartitionDesc addPtn = HCatAddPartitionDesc.create(dbName,
tableName, null, firstPtn).build();
client.addPartition(addPtn);
Map<String, String> secondPtn = new HashMap<String, String>();
secondPtn.put("dt", "04/12/2012");
secondPtn.put("country", "brazil");
HCatAddPartitionDesc addPtn2 = HCatAddPartitionDesc.create(dbName,
tableName, null, secondPtn).build();
client.addPartition(addPtn2);
Map<String, String> thirdPtn = new HashMap<String, String>();
thirdPtn.put("dt", "04/13/2012");
thirdPtn.put("country", "argentina");
HCatAddPartitionDesc addPtn3 = HCatAddPartitionDesc.create(dbName,
tableName, null, thirdPtn).build();
client.addPartition(addPtn3);
List<HCatPartition> ptnList = client.listPartitionsByFilter(dbName,
tableName, null);
assertTrue(ptnList.size() == 3);
HCatPartition ptn = client.getPartition(dbName, tableName, firstPtn);
assertTrue(ptn != null);
client.dropPartitions(dbName, tableName, firstPtn, true);
ptnList = client.listPartitionsByFilter(dbName,
tableName, null);
assertTrue(ptnList.size() == 2);
List<HCatPartition> ptnListTwo = client.listPartitionsByFilter(dbName,
tableName, "country = \"argentina\"");
assertTrue(ptnListTwo.size() == 1);
client.markPartitionForEvent(dbName, tableName, thirdPtn,
PartitionEventType.LOAD_DONE);
boolean isMarked = client.isPartitionMarkedForEvent(dbName, tableName,
thirdPtn, PartitionEventType.LOAD_DONE);
assertTrue(isMarked);
client.close();
}
@Test
public void testDatabaseLocation() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String dbName = "locationDB";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
HCatCreateDBDesc dbDesc = HCatCreateDBDesc.create(dbName)
.ifNotExists(true).location("/tmp/" + dbName).build();
client.createDatabase(dbDesc);
HCatDatabase newDB = client.getDatabase(dbName);
assertTrue(newDB.getLocation().equalsIgnoreCase("file:/tmp/" + dbName));
client.close();
}
@Test
public void testCreateTableLike() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String tableName = "tableone";
String cloneTable = "tabletwo";
client.dropTable(null, tableName, true);
client.dropTable(null, cloneTable, true);
ArrayList<HCatFieldSchema> cols = new ArrayList<HCatFieldSchema>();
cols.add(new HCatFieldSchema("id", Type.INT, "id columns"));
cols.add(new HCatFieldSchema("value", Type.STRING, "id columns"));
HCatCreateTableDesc tableDesc = HCatCreateTableDesc
.create(null, tableName, cols).fileFormat("rcfile").build();
client.createTable(tableDesc);
// create a new table similar to previous one.
client.createTableLike(null, tableName, cloneTable, true, false, null);
List<String> tables = client.listTableNamesByPattern(null, "table*");
assertTrue(tables.size() == 2);
client.close();
}
@Test
public void testRenameTable() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String tableName = "temptable";
String newName = "mytable";
client.dropTable(null, tableName, true);
client.dropTable(null, newName, true);
ArrayList<HCatFieldSchema> cols = new ArrayList<HCatFieldSchema>();
cols.add(new HCatFieldSchema("id", Type.INT, "id columns"));
cols.add(new HCatFieldSchema("value", Type.STRING, "id columns"));
HCatCreateTableDesc tableDesc = HCatCreateTableDesc
.create(null, tableName, cols).fileFormat("rcfile").build();
client.createTable(tableDesc);
client.renameTable(null, tableName, newName);
try {
client.getTable(null, tableName);
} catch (HCatException exp) {
assertTrue("Unexpected exception message: " + exp.getMessage(),
exp.getMessage().contains("NoSuchObjectException while fetching table"));
}
HCatTable newTable = client.getTable(null, newName);
assertTrue(newTable != null);
assertTrue(newTable.getTableName().equals(newName));
client.close();
}
@Test
public void testTransportFailure() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
boolean isExceptionCaught = false;
// Table creation with a long table name causes ConnectionFailureException
final String tableName = "Temptable" + new BigInteger(200, new Random()).toString(2);
ArrayList<HCatFieldSchema> cols = new ArrayList<HCatFieldSchema>();
cols.add(new HCatFieldSchema("id", Type.INT, "id columns"));
cols.add(new HCatFieldSchema("value", Type.STRING, "id columns"));
try {
HCatCreateTableDesc tableDesc = HCatCreateTableDesc
.create(null, tableName, cols).fileFormat("rcfile").build();
client.createTable(tableDesc);
} catch (Exception exp) {
isExceptionCaught = true;
assertEquals("Unexpected exception type.", HCatException.class, exp.getClass());
// The connection was closed, so create a new one.
client = HCatClient.create(new Configuration(hcatConf));
String newName = "goodTable";
client.dropTable(null, newName, true);
HCatCreateTableDesc tableDesc2 = HCatCreateTableDesc
.create(null, newName, cols).fileFormat("rcfile").build();
client.createTable(tableDesc2);
HCatTable newTable = client.getTable(null, newName);
assertTrue(newTable != null);
assertTrue(newTable.getTableName().equalsIgnoreCase(newName));
} finally {
client.close();
assertTrue("The expected exception was never thrown.", isExceptionCaught);
}
}
@Test
public void testOtherFailure() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String tableName = "Temptable";
boolean isExceptionCaught = false;
client.dropTable(null, tableName, true);
ArrayList<HCatFieldSchema> cols = new ArrayList<HCatFieldSchema>();
cols.add(new HCatFieldSchema("id", Type.INT, "id columns"));
cols.add(new HCatFieldSchema("value", Type.STRING, "id columns"));
try {
HCatCreateTableDesc tableDesc = HCatCreateTableDesc
.create(null, tableName, cols).fileFormat("rcfile").build();
client.createTable(tableDesc);
// The DB foo is non-existent.
client.getTable("foo", tableName);
} catch (Exception exp) {
isExceptionCaught = true;
assertTrue(exp instanceof HCatException);
String newName = "goodTable";
client.dropTable(null, newName, true);
HCatCreateTableDesc tableDesc2 = HCatCreateTableDesc
.create(null, newName, cols).fileFormat("rcfile").build();
client.createTable(tableDesc2);
HCatTable newTable = client.getTable(null, newName);
assertTrue(newTable != null);
assertTrue(newTable.getTableName().equalsIgnoreCase(newName));
} finally {
client.close();
assertTrue("The expected exception was never thrown.", isExceptionCaught);
}
}
@Test
public void testDropTableException() throws Exception {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String tableName = "tableToBeDropped";
boolean isExceptionCaught = false;
client.dropTable(null, tableName, true);
try {
client.dropTable(null, tableName, false);
} catch (Exception exp) {
isExceptionCaught = true;
assertTrue(exp instanceof HCatException);
LOG.info("Drop Table Exception: " + exp.getCause());
} finally {
client.close();
assertTrue("The expected exception was never thrown.", isExceptionCaught);
}
}
@Test
public void testUpdateTableSchema() throws Exception {
try {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
final String dbName = "testUpdateTableSchema_DBName";
final String tableName = "testUpdateTableSchema_TableName";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
client.createDatabase(HCatCreateDBDesc.create(dbName).build());
List<HCatFieldSchema> oldSchema = Arrays.asList(new HCatFieldSchema("foo", Type.INT, ""),
new HCatFieldSchema("bar", Type.STRING, ""));
client.createTable(HCatCreateTableDesc.create(dbName, tableName, oldSchema).build());
List<HCatFieldSchema> newSchema = Arrays.asList(new HCatFieldSchema("completely", Type.DOUBLE, ""),
new HCatFieldSchema("new", Type.FLOAT, ""),
new HCatFieldSchema("fields", Type.STRING, ""));
client.updateTableSchema(dbName, tableName, newSchema);
assertArrayEquals(newSchema.toArray(), client.getTable(dbName, tableName).getCols().toArray());
client.dropDatabase(dbName, false, HCatClient.DropDBMode.CASCADE);
}
catch (Exception exception) {
LOG.error("Unexpected exception.", exception);
assertTrue("Unexpected exception: " + exception.getMessage(), false);
}
}
@Test
public void testObjectNotFoundException() throws Exception {
try {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String dbName = "testObjectNotFoundException_DBName";
String tableName = "testObjectNotFoundException_TableName";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
try { // Test that fetching a non-existent db-name yields ObjectNotFound.
client.getDatabase(dbName);
assertTrue("Expected ObjectNotFoundException.", false);
} catch(Exception exception) {
LOG.info("Got exception: ", exception);
assertTrue("Expected ObjectNotFoundException. Got:" + exception.getClass(),
exception instanceof ObjectNotFoundException);
}
client.createDatabase(HCatCreateDBDesc.create(dbName).build());
try { // Test that fetching a non-existent table-name yields ObjectNotFound.
client.getTable(dbName, tableName);
assertTrue("Expected ObjectNotFoundException.", false);
} catch(Exception exception) {
LOG.info("Got exception: ", exception);
assertTrue("Expected ObjectNotFoundException. Got:" + exception.getClass(),
exception instanceof ObjectNotFoundException);
}
String partitionColumn = "part";
List<HCatFieldSchema> columns = Arrays.asList(new HCatFieldSchema("col", Type.STRING, ""));
ArrayList<HCatFieldSchema> partitionColumns = new ArrayList<HCatFieldSchema>(
Arrays.asList(new HCatFieldSchema(partitionColumn, Type.STRING, "")));
client.createTable(HCatCreateTableDesc.create(dbName, tableName, columns)
.partCols(partitionColumns)
.build());
Map<String, String> partitionSpec = new HashMap<String, String>();
partitionSpec.put(partitionColumn, "foobar");
try { // Test that fetching a non-existent partition yields ObjectNotFound.
client.getPartition(dbName, tableName, partitionSpec);
assertTrue("Expected ObjectNotFoundException.", false);
} catch(Exception exception) {
LOG.info("Got exception: ", exception);
assertTrue("Expected ObjectNotFoundException. Got:" + exception.getClass(),
exception instanceof ObjectNotFoundException);
}
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
// Test that listPartitionsByFilter() returns an empty-set, if the filter selects no partitions.
assertEquals("Expected empty set of partitions.",
0, client.listPartitionsByFilter(dbName, tableName, partitionColumn + " < 'foobar'").size());
try { // Test that listPartitionsByFilter() throws HCatException if the partition-key is incorrect.
partitionSpec.put("NonExistentKey", "foobar");
client.getPartition(dbName, tableName, partitionSpec);
assertTrue("Expected HCatException.", false);
} catch(Exception exception) {
LOG.info("Got exception: ", exception);
assertTrue("Expected HCatException. Got:" + exception.getClass(),
exception instanceof HCatException);
assertFalse("Did not expect ObjectNotFoundException.", exception instanceof ObjectNotFoundException);
}
}
catch (Throwable t) {
LOG.error("Unexpected exception!", t);
assertTrue("Unexpected exception! " + t.getMessage(), false);
}
}
@Test
public void testGetMessageBusTopicName() throws Exception {
try {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
String dbName = "testGetMessageBusTopicName_DBName";
String tableName = "testGetMessageBusTopicName_TableName";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
client.createDatabase(HCatCreateDBDesc.create(dbName).build());
String messageBusTopicName = "MY.topic.name";
Map<String, String> tableProperties = new HashMap<String, String>(1);
tableProperties.put(HCatConstants.HCAT_MSGBUS_TOPIC_NAME, messageBusTopicName);
client.createTable(HCatCreateTableDesc.create(dbName, tableName, Arrays.asList(new HCatFieldSchema("foo", Type.STRING, ""))).tblProps(tableProperties).build());
assertEquals("MessageBus topic-name doesn't match!", messageBusTopicName, client.getMessageBusTopicName(dbName, tableName));
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
client.close();
}
catch (Exception exception) {
LOG.error("Unexpected exception.", exception);
assertTrue("Unexpected exception:" + exception.getMessage(), false);
}
}
@Test
public void testPartitionSchema() throws Exception {
try {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
final String dbName = "myDb";
final String tableName = "myTable";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
client.createDatabase(HCatCreateDBDesc.create(dbName).build());
List<HCatFieldSchema> columnSchema = Arrays.asList(new HCatFieldSchema("foo", Type.INT, ""),
new HCatFieldSchema("bar", Type.STRING, ""));
List<HCatFieldSchema> partitionSchema = Arrays.asList(new HCatFieldSchema("dt", Type.STRING, ""),
new HCatFieldSchema("grid", Type.STRING, ""));
client.createTable(HCatCreateTableDesc.create(dbName, tableName, columnSchema).partCols(partitionSchema).build());
HCatTable table = client.getTable(dbName, tableName);
List<HCatFieldSchema> partitionColumns = table.getPartCols();
assertArrayEquals("Didn't get expected partition-schema back from the HCatTable.",
partitionSchema.toArray(), partitionColumns.toArray());
client.dropDatabase(dbName, false, HCatClient.DropDBMode.CASCADE);
}
catch (Exception unexpected) {
LOG.error("Unexpected exception!", unexpected);
assertTrue("Unexpected exception! " + unexpected.getMessage(), false);
}
}
@Test
public void testGetPartitionsWithPartialSpec() throws Exception {
try {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
final String dbName = "myDb";
final String tableName = "myTable";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
client.createDatabase(HCatCreateDBDesc.create(dbName).build());
List<HCatFieldSchema> columnSchema = Arrays.asList(new HCatFieldSchema("foo", Type.INT, ""),
new HCatFieldSchema("bar", Type.STRING, ""));
List<HCatFieldSchema> partitionSchema = Arrays.asList(new HCatFieldSchema("dt", Type.STRING, ""),
new HCatFieldSchema("grid", Type.STRING, ""));
client.createTable(HCatCreateTableDesc.create(dbName, tableName, columnSchema).partCols(new ArrayList<HCatFieldSchema>(partitionSchema)).build());
Map<String, String> partitionSpec = new HashMap<String, String>();
partitionSpec.put("grid", "AB");
partitionSpec.put("dt", "2011_12_31");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
partitionSpec.put("grid", "AB");
partitionSpec.put("dt", "2012_01_01");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
partitionSpec.put("dt", "2012_01_01");
partitionSpec.put("grid", "OB");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
partitionSpec.put("dt", "2012_01_01");
partitionSpec.put("grid", "XB");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
Map<String, String> partialPartitionSpec = new HashMap<String, String>();
partialPartitionSpec.put("dt", "2012_01_01");
List<HCatPartition> partitions = client.getPartitions(dbName, tableName, partialPartitionSpec);
assertEquals("Unexpected number of partitions.", 3, partitions.size());
assertArrayEquals("Mismatched partition.", new String[]{"2012_01_01", "AB"}, partitions.get(0).getValues().toArray());
assertArrayEquals("Mismatched partition.", new String[]{"2012_01_01", "OB"}, partitions.get(1).getValues().toArray());
assertArrayEquals("Mismatched partition.", new String[]{"2012_01_01", "XB"}, partitions.get(2).getValues().toArray());
client.dropDatabase(dbName, false, HCatClient.DropDBMode.CASCADE);
}
catch (Exception unexpected) {
LOG.error("Unexpected exception!", unexpected);
assertTrue("Unexpected exception! " + unexpected.getMessage(), false);
}
}
@Test
public void testDropPartitionsWithPartialSpec() throws Exception {
try {
HCatClient client = HCatClient.create(new Configuration(hcatConf));
final String dbName = "myDb";
final String tableName = "myTable";
client.dropDatabase(dbName, true, HCatClient.DropDBMode.CASCADE);
client.createDatabase(HCatCreateDBDesc.create(dbName).build());
List<HCatFieldSchema> columnSchema = Arrays.asList(new HCatFieldSchema("foo", Type.INT, ""),
new HCatFieldSchema("bar", Type.STRING, ""));
List<HCatFieldSchema> partitionSchema = Arrays.asList(new HCatFieldSchema("dt", Type.STRING, ""),
new HCatFieldSchema("grid", Type.STRING, ""));
client.createTable(HCatCreateTableDesc.create(dbName, tableName, columnSchema).partCols(new ArrayList<HCatFieldSchema>(partitionSchema)).build());
Map<String, String> partitionSpec = new HashMap<String, String>();
partitionSpec.put("grid", "AB");
partitionSpec.put("dt", "2011_12_31");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
partitionSpec.put("grid", "AB");
partitionSpec.put("dt", "2012_01_01");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
partitionSpec.put("dt", "2012_01_01");
partitionSpec.put("grid", "OB");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
partitionSpec.put("dt", "2012_01_01");
partitionSpec.put("grid", "XB");
client.addPartition(HCatAddPartitionDesc.create(dbName, tableName, "", partitionSpec).build());
Map<String, String> partialPartitionSpec = new HashMap<String, String>();
partialPartitionSpec.put("dt", "2012_01_01");
client.dropPartitions(dbName, tableName, partialPartitionSpec, true);
List<HCatPartition> partitions = client.getPartitions(dbName, tableName);
assertEquals("Unexpected number of partitions.", 1, partitions.size());
assertArrayEquals("Mismatched partition.", new String[]{"2011_12_31", "AB"}, partitions.get(0).getValues().toArray());
client.dropDatabase(dbName, false, HCatClient.DropDBMode.CASCADE);
}
catch (Exception unexpected) {
LOG.error("Unexpected exception!", unexpected);
assertTrue("Unexpected exception! " + unexpected.getMessage(), false);
}
}
}