HBase创建表

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create ‘<table name>’,’<column family>’

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hbase(main):002:0> create 'emp', 'personal data', ’professional data’

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0 row(s) in 1.1300 seconds
=> Hbase::Table - emp

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hbase(main):002:0> list
TABLE
emp
2 row(s) in 0.0340 seconds

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Configuration conf = HBaseConfiguration.create();
HBaseAdmin admin = new HBaseAdmin(conf);

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//creating table descriptor
HTableDescriptor table = new HTableDescriptor(toBytes("Table name"));
//creating column family descriptor
HColumnDescriptor family = new HColumnDescriptor(toBytes("column family"));
//adding coloumn family to HTable
table.addFamily(family);

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admin.createTable(table);

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import java.io.IOException;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.conf.Configuration;
public class CreateTable {
public static void main(String[] args) throws IOException {
// Instantiating configuration class
Configuration con = HBaseConfiguration.create();
// Instantiating HbaseAdmin class
HBaseAdmin admin = new HBaseAdmin(con);
// Instantiating table descriptor class
HTableDescriptor tableDescriptor = new
TableDescriptor(TableName.valueOf("emp"));
// Adding column families to table descriptor
tableDescriptor.addFamily(new HColumnDescriptor("personal"));
tableDescriptor.addFamily(new HColumnDescriptor("professional"));
// Execute the table through admin
admin.createTable(tableDescriptor);
System.out.println(" Table created ");
}
}

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$javac CreateTable.java
$java CreateTable

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Table created