@Test
public void createTableTest() throws IOException, InterruptedException {
String testName = "createTableTest";
String nsName = prefix + "_" + testName;
LOG.info(testName);
HTableDescriptor desc = new HTableDescriptor(TableName.valueOf(nsName + ":my_table"));
HColumnDescriptor colDesc = new HColumnDescriptor("my_cf");
desc.addFamily(colDesc);
try {
admin.createTable(desc);
fail("Expected no namespace exists exception");
} catch (NamespaceNotFoundException ex) {
}
// create table and in new namespace
admin.createNamespace(NamespaceDescriptor.create(nsName).build());
admin.createTable(desc);
TEST_UTIL.waitTableAvailable(desc.getTableName().getName(), 10000);
FileSystem fs = FileSystem.get(TEST_UTIL.getConfiguration());
assertTrue(
fs.exists(
new Path(
master.getMasterFileSystem().getRootDir(),
new Path(
HConstants.BASE_NAMESPACE_DIR,
new Path(nsName, desc.getTableName().getQualifierAsString())))));
assertEquals(1, admin.listTables().length);
// verify non-empty namespace can't be removed
try {
admin.deleteNamespace(nsName);
fail("Expected non-empty namespace constraint exception");
} catch (Exception ex) {
LOG.info("Caught expected exception: " + ex);
}
// sanity check try to write and read from table
Table table = TEST_UTIL.getConnection().getTable(desc.getTableName());
Put p = new Put(Bytes.toBytes("row1"));
p.add(Bytes.toBytes("my_cf"), Bytes.toBytes("my_col"), Bytes.toBytes("value1"));
table.put(p);
// flush and read from disk to make sure directory changes are working
admin.flush(desc.getTableName());
Get g = new Get(Bytes.toBytes("row1"));
assertTrue(table.exists(g));
// normal case of removing namespace
TEST_UTIL.deleteTable(desc.getTableName());
admin.deleteNamespace(nsName);
}
