1.在單機模式的基礎(chǔ)上進行配置，打開hbase-env.sh。

vim /usr/local/hbase/conf/hbase-env.sh

2.配置HBASE_CLASSPATH為hadoop安裝目錄下的conf目錄，即 /usr/local/hadoop/conf。JAVA_HOME、HBASE_MANAGES_ZK之前已經(jīng)配置好了。

export HBASE_CLASSPATH=/usr/local/hadoop/conf

3.打開hbase-site.xml文件，hbase.rootdir指定hbase數(shù)據(jù)在HDFS的存儲路徑；將hbase.cluter.distributed設(shè)置為true。

vim /usr/local/hbase/conf/hbase-site.xml

配置信息如下

<configuration><property><name>hbase.rootdir</name><value>hdfs://localhost:9000/hbase</value>#指定HBase的存儲目錄。</property><property><name>hbase.cluster.distributed</name>#設(shè)置集群處于分布式模式<value>true</value></property><property><name>hbase.unsafe.stream.capability.enforce</name>#避免出現(xiàn)啟動錯誤。<value>false</value></property> </configuration>

4.Hbase的啟動測試，先啟動hadoop，在啟動hbase。

ssh localhost cd /usr/local/hadoop ./sbin/start-dfs.sh jps cd /usr/local/hbase bin/start-hbase.sh jps

最終看到如下信息，則成功開啟。

5.關(guān)閉, 先關(guān)閉hbase，在關(guān)閉hadoop。

bin/stop-hbase.sh cd /usr/local/hadoop ./sbin/stop-dfs.sh

6.Hbase shell 命令

• 進入hbase的shell

hbase shell 在這里插入代碼片

7.Java API編程

• 導(dǎo)入hbase的lib目錄下的所有jar包。

package my.hbase; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.*; import org.apache.hadoop.hbase.client.*; import org.apache.hadoop.hbase.util.Bytes;import java.io.IOException;public class HbaseCode {public static Configuration configuration;public static Connection connection;public static Admin admin;public static void main(String[] args)throws IOException{init();createTable("student-info",new String[]{"score"});insertData("student-info","zhangsan","score","English","69");insertData("student-info","zhangsan","score","Math","86");insertData("student-info","zhangsan","score","Computer","77");getData("student-info", "zhangsan", "score","English");close();}public static void init(){configuration = HBaseConfiguration.create();//設(shè)置hbase數(shù)據(jù)存儲的根路徑，放在分布式文件系統(tǒng)hdfs目錄下configuration.set("hbase.rootdir","hdfs://localhost:9000/hbase");try{//建立鏈接connection = ConnectionFactory.createConnection(configuration);admin = connection.getAdmin();}catch (IOException e){e.printStackTrace();}}public static void close(){try{if(admin != null){admin.close();}if(null != connection){connection.close();}}catch (IOException e){e.printStackTrace();}}public static void createTable(String myTableName,String[] colFamily) throws IOException {TableName tableName = TableName.valueOf(myTableName);if(admin.tableExists(tableName)){System.out.println("talbe is exists!");}else {//管理表的信息TableDescriptorBuilder tableDescriptor = TableDescriptorBuilder.newBuilder(tableName);for(String str:colFamily){//管理列族的類ColumnFamilyDescriptor family = ColumnFamilyDescriptorBuilder.newBuilder(Bytes.toBytes(str)).build();tableDescriptor.setColumnFamily(family);}admin.createTable(tableDescriptor.build());} }public static void insertData(String tableName,String rowKey,String colFamily,String col,String val) throws IOException { Table table = connection.getTable(TableName.valueOf(tableName));Put put = new Put(rowKey.getBytes());put.addColumn(colFamily.getBytes(),col.getBytes(), val.getBytes());table.put(put);table.close(); }public static void getData(String tableName,String rowKey,String colFamily, String col)throws IOException{ Table table = connection.getTable(TableName.valueOf(tableName));Get get = new Get(rowKey.getBytes());get.addColumn(colFamily.getBytes(),col.getBytes());Result result = table.get(get);System.out.println(new String(result.getValue(colFamily.getBytes(),col==null?null:col.getBytes())));table.close(); } }

運行結(jié)果查看如下student-info表。

8.源鏈接
廈門大學(xué)數(shù)據(jù)庫實驗室

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