{{{
#!html
<div style="text-align: center; color:#151B8D"><big style="font-weight: bold;"><big><big>
ITRI HBase 進階課程 
</big></big></big></div> <div style="text-align: center; color:#7E2217"><big style="font-weight: bold;"><big>
HBase 範例
</big></big></div>
}}}

[wiki:waue/2011/0426_4_4 上一關 < ] 第五關 [wiki:waue/2011/0426_4_6 > 下一關]

= 範例五： 刪除資料表 =

{{{
$ bin/hadoop jar ItriMenu.jar DropTable "ex1Table"
}}}

{{{
#!java

package itri;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.util.GenericOptionsParser;

public class DropTable {

	static void drop(String tablename) {
		HBaseConfiguration conf = new HBaseConfiguration();

		HBaseAdmin admin;
		try {
			admin = new HBaseAdmin(conf);
			if (admin.tableExists(tablename)) {
				admin.disableTable(tablename);
				admin.deleteTable(tablename);
				System.out.println("Droped the table [" + tablename + "]");
			} else {
				System.out.println("Table [" + tablename + "] was not found!");
			}

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] argv) {
//		String[] argc = {"t1"};argv = argc;
		String[] otherArgs = new GenericOptionsParser(new Configuration(), argv)
				.getRemainingArgs();
		if (otherArgs.length < 1) {
			System.out.println("DropTable <TableName> ");
			return;
		}
		
		drop(otherArgs[0]);
	}
}

}}}

 * 執行結果

{{{
Droped the table [ex1Table]
}}}