package admin;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.util.Bytes;
import util.HBaseHelper;
// cc CreateTableWithNamespaceExample Example using the administrative API to create a table with a custom namespace
public class CreateTableWithNamespaceExample {
public static void main(String[] args) throws IOException, InterruptedException {
Configuration conf = HBaseConfiguration.create();
HBaseHelper helper = HBaseHelper.getHelper(conf);
helper.dropTable("testtable");
Connection connection = ConnectionFactory.createConnection(conf);
Admin admin = connection.getAdmin();
// vv CreateTableWithNamespaceExample
/*[*/NamespaceDescriptor namespace =
NamespaceDescriptor.create("testspace").build();
admin.createNamespace(namespace);/*]*/
TableName tableName = TableName.valueOf("testspace", "testtable");
HTableDescriptor desc = new HTableDescriptor(tableName);
HColumnDescriptor coldef = new HColumnDescriptor(
Bytes.toBytes("colfam1"));
desc.addFamily(coldef);
admin.createTable(desc);
// ^^ CreateTableWithNamespaceExample
boolean avail = admin.isTableAvailable(tableName);
System.out.println("Table available: " + avail);
}
}