Hbase之批量数据写入
/** * Created by similarface on 16/8/16. */ import java.io.IOException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.TableName; import org.apache.hadoop.hbase.client.Connection; import org.apache.hadoop.hbase.client.ConnectionFactory; import org.apache.hadoop.hbase.client.Get; import org.apache.hadoop.hbase.client.Table; import org.apache.hadoop.hbase.client.Put; import org.apache.hadoop.hbase.client.Result; import org.apache.hadoop.hbase.util.Bytes; import org.apache.hadoop.hbase.client.BufferedMutator; import org.apache.hadoop.hbase.Cell; import org.apache.hadoop.hbase.CellUtil; import org.apache.hadoop.hbase.client.Mutation; import java.util.List; import java.util.ArrayList; public class PutBufferExample { public static void main(String[] args) throws IOException { //获取陪着参数 Configuration config = HBaseConfiguration.create(); //建立连接 Connection connection = ConnectionFactory.createConnection(config); try { //连接表 获取表对象 Table t = connection.getTable(TableName.valueOf("testtable")); BufferedMutator table = connection.getBufferedMutator(TableName.valueOf("testtable")); try { Put p = new Put(Bytes.toBytes("myrow-1")); //p.add(); 这个地方的add 是个过期的方法然而我并不知道Cell的用法是什么 p.add(Bytes.toBytes("colfam1"), Bytes.toBytes("name1"), Bytes.toBytes("zhangsan1")); //table.put(p); List<Mutation> mutations = new ArrayList<Mutation>(); mutations.add(p); table.mutate(mutations); //如果不flush 在后面get可能是看不见的 table.flush(); // Close your table and cluster connection. Get get=new Get(Bytes.toBytes("myrow-1")); Result result=t.get(get); for(Cell cell:result.rawCells()){ System.out.print("行健: "+new String(CellUtil.cloneRow(cell))); System.out.print("\t列簇: "+new String(CellUtil.cloneFamily(cell))); System.out.print("\t列: "+new String(CellUtil.cloneQualifier(cell))); System.out.print("\t值: "+new String(CellUtil.cloneValue(cell))); System.out.println("\t时间戳: "+cell.getTimestamp()); } System.out.print(">>>>end"); } finally { if (table != null) table.close(); } } finally { connection.close(); } } }