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HBaseCreateTable.java
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HBaseCreateTable.java
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package soda.homework3;
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.TableName;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import java.io.IOException;
public class HBaseCreateTable {
private final static String TABLE_NAME = "soda:student";
private final static String COLUMN_FAMILY_NAME = "name";
private final static String COLUMN_FAMILY_INFO = "info";
private final static String COLUMN_FAMILY_SCORE = "score";
public static void main(String[] args) throws IOException {
Configuration config = HBaseConfiguration.create();
config.set("hbase.rootdir", "hdfs://47.101.206.249:8020/hbase");
config.set("hbase.zookeeper.quorum", "47.101.206.249");
config.set("hbase.zookeeper.property.clientPort", "2181");
createSchemaTables(config);
}
public static void createSchemaTables(Configuration config) throws IOException {
try (Connection conn = ConnectionFactory.createConnection(config);
Admin admin = conn.getAdmin();
) {
HTableDescriptor hTableDescriptor = new HTableDescriptor(TableName.valueOf(TABLE_NAME));
hTableDescriptor.addFamily(new HColumnDescriptor(COLUMN_FAMILY_NAME));
hTableDescriptor.addFamily(new HColumnDescriptor(COLUMN_FAMILY_INFO));
hTableDescriptor.addFamily(new HColumnDescriptor(COLUMN_FAMILY_SCORE));
System.out.println("create table");
createOrOverwrite(admin, hTableDescriptor);
System.out.println("done");
}
}
public static void createOrOverwrite(Admin admin, HTableDescriptor table) throws IOException {
TableName tableName = table.getTableName();
if (admin.tableExists(tableName)) {
admin.disableTable(tableName);
admin.disableTable(tableName);
}
admin.createTable(table);
}
}