Hbase-thrift Practice (Java)

Reference website:

Http://wiki.apache.org/hadoop/Hbase/ThriftApi

Environment: hbase-0.98.1-cdh5.1.0,hadoop-2.3.0-cdh5.1.0,centos6.5 x64,thrift2

1. Introducing MAVEN Dependencies

HBase has integrated thrift, and if Java does not have to install thrift to generate the server code, only the following dependencies are introduced:

<dependency><groupid>org.apache.hbase</groupid><artifactid>hbase-thrift</artifactid ><version>0.98.1-cdh5.1.0</version></dependency>

2. Turn on Hbase-thrift service

The use of THRIFT2,THRIFT2 is an upgraded version of thrift.

[Hbase-root]/bin/hbase thrift2 start

The default port is 9090

3. Writing the Client sample program

Implemented a new record to query a record

/** * * Licensed to the Apache software Foundation (ASF) under one * or more contributor license agreements.  See the NOTICE file * Distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * under the Apache License, Version 2.0 (The * "License");  You are not a use of this file except in compliance * with the License. Obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * unless required by applicab Le law or agreed into writing, software * Distributed under the License is distributed on a "as is" BASIS, * without WAR Ranties or CONDITIONS of any KIND, either express OR implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.jamesfen.hbase;import java.nio.bytebuffer;import Java.util.arraylist;import java.util.List;import Org.apache.hadoop.hbase.thrift2.generated.tcolumnvalue;import Org.apache.hadoop.hbase.thrift2.geneRated. Tget;import Org.apache.hadoop.hbase.thrift2.generated.thbaseservice;import Org.apache.hadoop.hbase.thrift2.generated.tioerror;import Org.apache.hadoop.hbase.thrift2.generated.tput;import Org.apache.hadoop.hbase.thrift2.generated.tresult;import Org.apache.thrift.texception;import Org.apache.thrift.protocol.tbinaryprotocol;import Org.apache.thrift.protocol.tprotocol;import Org.apache.thrift.transport.tframedtransport;import Org.apache.thrift.transport.tsocket;import  Org.apache.thrift.transport.ttransport;public class Democlient {public static void main (string[] args) throws Tioerror,    texception {System.out.println ("Thrift2 Demo");    System.out.println ("usage:democlient [Host=localhost] [port=9090]");        System.out.println ("This demo assumes you has a table called \" Example\ "with a column family called \" family1\ ");    String host = "192.168.58.101";    int port = 9090; Use passed in arguments instead of defaults if (args.length >= 1) {host = Args[0];    } if (Args.length >= 2) {port = Integer.parseint (args[1]);    } int timeout = 10000;    Boolean framed = false;    Ttransport transport = new Tsocket (host, port, timeout);    if (framed) {transport = new tframedtransport (transport);    } Tprotocol protocol = new Tbinaryprotocol (transport);    This is our thrift client.    Thbaseservice.iface client = new Thbaseservice.client (protocol);        Open the transport transport.open ();    Bytebuffer table = bytebuffer.wrap ("blog". GetBytes ());    TPut put = new TPut ();    Put.setrow ("103". GetBytes ());    Tcolumnvalue columnvalue = new Tcolumnvalue ();    Columnvalue.setfamily ("article". GetBytes ());    Columnvalue.setqualifier ("title,". GetBytes ());    Columnvalue.setvalue ("Change Thirft". GetBytes ());    list<tcolumnvalue> columnvalues = new arraylist<tcolumnvalue> ();    Columnvalues.add (Columnvalue);    Put.setcolumnvalues (columnvalues);    Client.put (table, put);    Tget get = new Tget (); Get. Setrow ("102". GetBytes ());    TResult result = client.get (table, get);    System.out.print ("row =" + New String (Result.getrow ())); For (Tcolumnvalue resultColumnValue:result.getColumnValues ()) {System.out.print (", family =" + New String (Resultco      Lumnvalue.getfamily ()));      System.out.print (", qualifier =" + New String (resultcolumnvalue.getfamily ()));      System.out.print (", value =" + New String (Resultcolumnvalue.getvalue ()));    System.out.print (", timestamp =" + Resultcolumnvalue.gettimestamp ());  } transport.close (); }}

4. Running Results

row = 102,family = Article,qualifier = Article,value = Change Thirft,timestamp = 1423496756997

Hbase-thrift Practice (Java)