@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 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 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 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 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 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);
}
}
@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 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();
}