最新educoder平台hbase开发：-java-api-表.docx

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1、精品资料educoder平台HBase开发：-Java-API-管理表........................................精品资料第1关：JavaAPI获取表的列表packagestep1;importjava.util.ArrayList;importjava.util.List;importorg.apache.hadoop.conf.*;importorg.apache.hadoop.hbase.*;importorg.apache.hadoop.hbase.client.*;importorg.apache.hadoop.hbase.util.*;publi

2、cclassTask{publicvoidshowTableList()throwsException{/*********Begin*********/Configurationconf=HBaseConfiguration.create();Connectionconnection=ConnectionFactory.createConnection(conf);Adminadmin=connection.getAdmin();try{ListtableDescriptors=admin.listTableDescriptors();...........

3、.............................精品资料for(TableDescriptortableDescriptor:tableDescriptors){TableNametableName=tableDescriptor.getTableName();System.out.println("Table："+tableName);System.out.println("texists："+admin.tableExists(tableName));System.out.println("tenabled："+admin.isTableEnabled(tableName))

4、;}}finally{admin.close();}/*********End*********/}}------------------------------------------------------------------第2关：修改表........................................精品资料packagestep2;importjava.io.IOException;importorg.apache.hadoop.conf.*;importorg.apache.hadoop.hbase.*;importorg.apache.hadoop.hbase.

5、client.*;importorg.apache.hadoop.hbase.io.compress.Compression;importorg.apache.hadoop.hbase.util.*;publicclassTask{publicvoidupdateTables()throwsException{/*********Begin*********/Configurationconfig=newConfiguration();Connectionconn=ConnectionFactory.createConnection(config);Adminadmin=conn.getAdm

6、in();String[]tableNames={"t_emp2","t_dept2"};//获取表的描述对象........................................精品资料for(inti=0;i

7、es.toBytes("data"));//构建Builder对象buildFamily.setBlockCacheEnabled(false);buildFamily.setBlocksize(1024*1024*1);buildFamily.setCompressionType(Compression.Algorithm.GZ);ColumnFamilyDescriptorfamily=bui