HBase 最新版本（1.0以上）测试案例

最近写HBase，使用最近的1.0版本，发现很多功能都不建议使用，依据官方的文档写了份关于增删改查的测试案例，供学习交流。

import org.apache.hadoop.conf.Configuration;import org.apache.hadoop.hbase.*;import org.apache.hadoop.hbase.client.*;import org.apache.hadoop.hbase.io.compress.Compression;import org.apache.hadoop.hbase.util.Bytes;import org.junit.Before;import org.junit.Test;import java.io.IOException;/** * Hbase 基本CRUD 样例代码   覆盖Put Get Delete checkAndPut checkAndDelete  Scan * 通过上面的各种操作的例子, 会基本覆盖Htable可以用的的所有方法 * 这里不涉及Hbase 管理代码的操作 * @author seagle * */public class HbaseCRUDTest {    @Before    public void beforeTest(){    }    @Test    public void createTest() throws IOException {        Configuration conf = HBaseConfiguration.create();        Connection connection = ConnectionFactory.createConnection(conf);        String tablename = "test";        String familyname="info";        Admin admin = connection.getAdmin();        HTableDescriptor table = new HTableDescriptor(TableName.valueOf(tablename));        table.addFamily(new HColumnDescriptor(familyname).setCompressionType(Compression.Algorithm.SNAPPY));        System.out.print("Creating table. ");        // 判断是否存在,如果存在,先删除.        if (admin.tableExists(table.getTableName())) {            admin.disableTable(table.getTableName());            admin.deleteTable(table.getTableName());  // 删除存在的表        }        // 创建表        admin.createTable(table);        System.out.println(" Done.");    }    @Test    public void putTest() throws IOException {        Configuration conf = HBaseConfiguration.create();// Use below code for HBase version 1.x.x or above.        Connection connection = ConnectionFactory.createConnection(conf);        TableName tableName = TableName.valueOf("test");        Table table = connection.getTable(tableName);        Put put = new Put(Bytes.toBytes("8")); // row key//        put.addColumn(Bytes.toBytes("family"),Bytes.toBytes("qualifier"),Bytes.toBytes("value"));        put.addColumn(Bytes.toBytes("info"),Bytes.toBytes("level_1"),Bytes.toBytes("4"));        put.addColumn(Bytes.toBytes("info"),Bytes.toBytes("level_2"),Bytes.toBytes("4"));        put.addColumn(Bytes.toBytes("info"),Bytes.toBytes("level_3"),Bytes.toBytes("4"));        put.addColumn(Bytes.toBytes("info"),Bytes.toBytes("level_4"),Bytes.toBytes("4"));        table.put(put);    }    @Test    public void getTest() throws IOException {        Configuration conf = HBaseConfiguration.create();// Use below code for HBase version 1.x.x or above.        Connection connection = ConnectionFactory.createConnection(conf);        TableName tableName = TableName.valueOf("test");        Table table = connection.getTable(tableName);        StringBuffer sb = null;        Get get = new Get(Bytes.toBytes("8"));        Result result = table.get(get);        for (Cell c : result.rawCells()) {            sb = new StringBuffer(Bytes.toString(CellUtil.cloneRow(c)));            sb.append("==> ");            sb.append(Bytes.toString(CellUtil.cloneFamily(c)));            sb.append("{");            sb.append(Bytes.toString(CellUtil.cloneQualifier(c)));            sb.append(":");            sb.append(Bytes.toString(CellUtil.cloneValue(c)));            sb.append("}");            System.out.println(sb);        }    }    @Test    public void scanTest() throws IOException {        Configuration conf = HBaseConfiguration.create();        Connection connection = ConnectionFactory.createConnection(conf);        TableName tableName = TableName.valueOf("test");        Table table = connection.getTable(tableName);        StringBuffer sb = null;        Scan scan = new Scan();        ResultScanner scanner = table.getScanner(scan);        for (Result res : scanner) {            for (Cell c : res.rawCells()) {                sb = new StringBuffer(Bytes.toString(CellUtil.cloneRow(c)));                sb.append(" ==> ");                sb.append(Bytes.toString(CellUtil.cloneFamily(c)));                sb.append(" {");                sb.append(Bytes.toString(CellUtil.cloneQualifier(c)));                sb.append(":");                sb.append(Bytes.toString(CellUtil.cloneValue(c)));                sb.append("}");                System.out.println(sb.toString());            }        }    }    @Test    public void modifyTest() throws IOException{        Configuration conf = HBaseConfiguration.create();        try (Connection connection = ConnectionFactory.createConnection(conf);             Admin admin = connection.getAdmin()) {            TableName tableName = TableName.valueOf("test");            if (!admin.tableExists(tableName)) {                System.out.println("表不存在");                System.exit(-1);            }            HTableDescriptor table = new HTableDescriptor(tableName);            // add family//            HColumnDescriptor newColumn = new HColumnDescriptor("testinfo");//            newColumn.setCompactionCompressionType(Compression.Algorithm.GZ);//            newColumn.setMaxVersions(HConstants.ALL_VERSIONS);//            admin.addColumn(tableName, newColumn);            // Update existing column family            HColumnDescriptor existingColumn = new HColumnDescriptor("info");            existingColumn.setCompactionCompressionType(Compression.Algorithm.GZ);            existingColumn.setMaxVersions(HConstants.ALL_VERSIONS);            table.modifyFamily(existingColumn);            admin.modifyTable(tableName, table);            // Disable an existing table//            admin.disableTable(tableName);            // Delete an existing column family//            admin.deleteColumn(tableName, "testinfo".getBytes("UTF-8"));            // Delete a table (Need to be disabled first)//            admin.deleteTable(tableName);        }    }    @Test    public void deleteColumnDataTest() throws IOException {        Configuration conf = HBaseConfiguration.create();        Connection connection = ConnectionFactory.createConnection(conf);        TableName tableName = TableName.valueOf("test");        Table table = connection.getTable(tableName);        Delete delete = new Delete(Bytes.toBytes("8"));        table.delete(delete);        System.out.println("删除数据成功");    }}