@Test
public void verifyReservedNS() throws IOException {
// verify existence of reserved namespaces
NamespaceDescriptor ns =
admin.getNamespaceDescriptor(NamespaceDescriptor.DEFAULT_NAMESPACE.getName());
assertNotNull(ns);
assertEquals(ns.getName(), NamespaceDescriptor.DEFAULT_NAMESPACE.getName());
assertNotNull(zkNamespaceManager.get(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME_STR));
ns = admin.getNamespaceDescriptor(NamespaceDescriptor.SYSTEM_NAMESPACE.getName());
assertNotNull(ns);
assertEquals(ns.getName(), NamespaceDescriptor.SYSTEM_NAMESPACE.getName());
assertNotNull(zkNamespaceManager.get(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR));
assertEquals(2, admin.listNamespaceDescriptors().length);
// verify existence of system tables
Set<TableName> systemTables =
Sets.newHashSet(TableName.META_TABLE_NAME, TableName.NAMESPACE_TABLE_NAME);
HTableDescriptor[] descs =
admin.listTableDescriptorsByNamespace(NamespaceDescriptor.SYSTEM_NAMESPACE.getName());
assertEquals(systemTables.size(), descs.length);
for (HTableDescriptor desc : descs) {
assertTrue(systemTables.contains(desc.getTableName()));
}
// verify system tables aren't listed
assertEquals(0, admin.listTables().length);
// Try creating default and system namespaces.
boolean exceptionCaught = false;
try {
admin.createNamespace(NamespaceDescriptor.DEFAULT_NAMESPACE);
} catch (IOException exp) {
LOG.warn(exp);
exceptionCaught = true;
} finally {
assertTrue(exceptionCaught);
}
exceptionCaught = false;
try {
admin.createNamespace(NamespaceDescriptor.SYSTEM_NAMESPACE);
} catch (IOException exp) {
LOG.warn(exp);
exceptionCaught = true;
} finally {
assertTrue(exceptionCaught);
}
}
@BeforeClass
public static void setUp() throws Exception {
TEST_UTIL = new HBaseTestingUtility();
TEST_UTIL.startMiniCluster(NUM_SLAVES_BASE);
admin = TEST_UTIL.getHBaseAdmin();
cluster = TEST_UTIL.getHBaseCluster();
master = ((MiniHBaseCluster) cluster).getMaster();
zkNamespaceManager = new ZKNamespaceManager(master.getZooKeeper());
zkNamespaceManager.start();
LOG.info("Done initializing cluster");
}
@Test
public void createRemoveTest() throws Exception {
String testName = "createRemoveTest";
String nsName = prefix + "_" + testName;
LOG.info(testName);
// create namespace and verify
admin.createNamespace(NamespaceDescriptor.create(nsName).build());
assertEquals(3, admin.listNamespaceDescriptors().length);
TEST_UTIL.waitFor(
60000,
new Waiter.Predicate<Exception>() {
@Override
public boolean evaluate() throws Exception {
return zkNamespaceManager.list().size() == 3;
}
});
assertNotNull(zkNamespaceManager.get(nsName));
// remove namespace and verify
admin.deleteNamespace(nsName);
assertEquals(2, admin.listNamespaceDescriptors().length);
assertEquals(2, zkNamespaceManager.list().size());
assertNull(zkNamespaceManager.get(nsName));
}
