php通过thrift 0.9.0操作HBase_PHP教程
- WBOY原創
- 2016-07-20 11:14:371038瀏覽
最近项目中需要使用thrift和php来读写HBase中的相关数据,所以就整理了下相关的类,做了下测试.
现在自己用到的操作HBase的方式主要有以下几种:
1.HBase Shell, 主要是配置后执行 shell 通过命令查看 HBase 中的数据,比如 count 'xxxx', scan 'xxxx' 等.
2.通过Native Java Api , 自己封装了一个 RESTfull的Api , 通过提供的Api(http)方式来操作HBase
3.使用Thrift 的序列化技术,Thrift支持C++,PHP,Python等语言,适合其他的异构系统操作HBase,这块刚刚尝试
4.使用HBasExplorer,之前写的一个图形化的客户端来操作HBase, http://www.cnblogs.com/scotoma/archive/2012/12/18/2824311.html
5. Hive/Pig , 这个现在还没真正的用过.
当前主要讲第三种方式 Thrift, 这个是Facebook开源出来的, 官方网站是 http://thrift.apache.org/ .
下载安装和启动,请看参考文章中的内容
查看是否跑成功...
使用php 类文件操作Hbase, 生成类文件的方式,请看参考文章中的生产的方法,不过我自己测试的生成方法有Bug,生成的 类文件中 namespace 是空的, 但是从官方源码库中生成的是 namespace Hbase, 所以这里需要注意一下.
我调试了一个驱动类文件,放到了github上了,大家需要的可以下载使用.
https://github.com/xinqiyang/buddy/tree/master/Vender/thrift
接下来进行测试操作,参考http://blog.csdn.net/hguisu/article/details/7298456 这里的测试类,写了个测试,并调试了下
<?php
/***
Thrift Test Class by xinqiyang
*/
ini_set('display_error', E_ALL);
$GLOBALS['THRIFT_ROOT'] = './lib';
/* Dependencies. In the proper order. */
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Transport/TTransport.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Transport/TSocket.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Protocol/TProtocol.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Protocol/TBinaryProtocol.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Transport/TBufferedTransport.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Type/TMessageType.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Factory/TStringFuncFactory.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/StringFunc/TStringFunc.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/StringFunc/Core.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Type/TType.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Exception/TException.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Exception/TTransportException.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Thrift/Exception/TProtocolException.php';
/* Remember these two files? */
require_once $GLOBALS['THRIFT_ROOT'].'/Types.php';
require_once $GLOBALS['THRIFT_ROOT'].'/Hbase.php';
use Thrift\Protocol\TBinaryProtocol;
use Thrift\Transport\TSocket;
use Thrift\Transport\TSocketPool;
use Thrift\Transport\TFramedTransport;
use Thrift\Transport\TBufferedTransport;
use Hbase\HbaseClient;
//define host and port
$host = '192.168.56.56';
$port = 9090;
$socket = new Thrift\Transport\TSocket($host, $port);
$transport = new TBufferedTransport($socket);
$protocol = new TBinaryProtocol($transport);
// Create a calculator client
$client = new HbaseClient($protocol);
$transport->open();
//echo "Time: " . $client -> time();
$tables = $client->getTableNames();
sort($tables);
foreach ($tables as $name) {
echo $name."\r\n";
}
//create a fc and then create a table
$columns = array(
new \Hbase\ColumnDescriptor(array(
'name' => 'id:',
'maxVersions' => 10
)),
new \Hbase\ColumnDescriptor(array(
'name' => 'name:'
)),
new \Hbase\ColumnDescriptor(array(
'name' => 'score:'
)),
);
$tableName = "student";
/*
try {
$client->createTable($tableName, $columns);
} catch (AlreadyExists $ae) {
var_dump( "WARN: {$ae->message}\n" );
}
*/
// get table descriptors
$descriptors = $client->getColumnDescriptors($tableName);
asort($descriptors);
foreach ($descriptors as $col) {
var_dump( " column: {$col->name}, maxVer: {$col->maxVersions}\n" );
}
//set clomn
//add update column data
$time = time();
var_dump($time);
$row = '2';
$valid = "foobar-".$time;
$mutations = array(
new \Hbase\Mutation(array(
'column' => 'score',
'value' => $valid
)),
);
$mutations1 = array(
new \Hbase\Mutation(array(
'column' => 'score:a',
'value' => $time,
)),
);
$attributes = array (
);
//add row, write a row
$row1 = $time;
$client->mutateRow($tableName, $row1, $mutations1, $attributes);
echo "-------write row $row1 ---\r\n";
//update row
$client->mutateRow($tableName, $row, $mutations, $attributes);
//get column data
$row_name = $time;
$fam_col_name = 'score:a';
$arr = $client->get($tableName, $row_name, $fam_col_name, $attributes);
// $arr = array
foreach ($arr as $k => $v) {
// $k = TCell
echo " ------ get one : value = {$v->value} , <br> ";
echo " ------ get one : timestamp = {$v->timestamp} <br>";
}
echo "----------\r\n";
$arr = $client->getRow($tableName, $row_name, $attributes);
// $client->getRow return a array
foreach ($arr as $k => $TRowResult) {
// $k = 0 ; non-use
// $TRowResult = TRowResult
var_dump($TRowResult);
}
echo "----------\r\n";
/******
//no test
public function scannerOpenWithScan($tableName, \Hbase\TScan $scan, $attributes);
public function scannerOpen($tableName, $startRow, $columns, $attributes);
public function scannerOpenWithStop($tableName, $startRow, $stopRow, $columns, $attributes);
public function scannerOpenWithPrefix($tableName, $startAndPrefix, $columns, $attributes);
public function scannerOpenTs($tableName, $startRow, $columns, $timestamp, $attributes);
public function scannerOpenWithStopTs($tableName, $startRow, $stopRow, $columns, $timestamp, $attributes);
public function scannerGet($id);
public function scannerGetList($id, $nbRows);
public function scannerClose($id);
*/
echo "----scanner get ------\r\n";
$startRow = '1';
$columns = array ('column' => 'score', );
//
$scan = $client->scannerOpen($tableName, $startRow, $columns, $attributes);
//$startAndPrefix = '13686667';
//$scan = $client->scannerOpenWithPrefix($tableName,$startAndPrefix,$columns,$attributes);
//$startRow = '1';
//$stopRow = '2';
//$scan = $client->scannerOpenWithStop($tableName, $startRow, $stopRow, $columns, $attributes);
//$arr = $client->scannerGet($scan);
$nbRows = 1000;
$arr = $client->scannerGetList($scan, $nbRows);
var_dump('count of result :'.count($arr));
foreach ($arr as $k => $TRowResult) {
// code...
//var_dump($TRowResult);
}
$client->scannerClose($scan);
//close transport
$transport->close();
这里操作了 createTable , Insert Row , Get Table , Update Row,Scan Table 这些常用的,先熟悉下.
实际操作的时候,需要注意:
1.php的版本,需要支持命名空间,所以需要5.3以上的支持
2.安装thrift的php扩展,貌似这个没有实际用到,还是得使用相关的php文件,谁能写个扩展就好了.不知道性能是否能够提升.
3.对于scan的相关操作,测试了 start/stop, prefix的Scan,感觉还是可以的.
4.感觉php的命名空间很挫,怎么办..\分割感觉就是那么的不地道......
接下来,有时间的话,会做下其他的几个操作,并进行压力测试,并将这个部署到集群中去.
大家有用Thrift的欢迎交流,感谢hguisu写的这个文章(参考文章),让大家能够尽快的入门.
更新内容:
20130517 在集群上启动了Thrift发现写入操作的时候,还是不稳定,有比较严重的超时现象,对于这块的操作,需要进行 php 操作类的优化. 其实感觉操作类还是写的太复杂的了.
参考文章:
http://blog.csdn.net/hguisu/article/details/7298456