Hadoop 全分布模式平台搭建

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Hadoop 全分布模式平台搭建

现将博客搬家至CSDN，博主改去CSDN玩玩~ 传送门：http://blog.csdn.net/sinat_28177969/article/details/54138163

Ps：主要答疑区在本帖最下方，疑点会标注出来。个人在配置过程中遇到的困难都会此列举。

实验介绍：

　　本次实验主要介绍了Hadoop平台的两个核心工具，HDFS和Mapreduce，结合这两个核心在Linux下搭建基于YARN集群的全分布模式的Hadoop架构。

　　实验案例，基于Hadoop平台下的Wordcount分词统计的试验

实验需求：

　　1、PC机，局域网服务，Linux系统　　

背景介绍：

Hadoop实现了一个分布式文件系统，简称HDFS。

HDFS有高容错性的特点，并且设计用来部署在普PC机上，而且它提供高吞吐量来访问应用程序的数据，适合那些有着超大数据集的应用程序。

HDFS放宽了POSIX的要求，可以以流的形式访问文件系统中的数据。

Hadoop的框架最核心的设计就是：

HDFS和MapReduce。

HDFS为海量的数据提供了存储，则MapReduce为海量的数据提供了计算。

开发者在熟练掌握了hadoop的使用后轻松地在Hadoop上开发和运行处理海量数据的应用程序

　　NameNode

NameNode 是一个通常在 HDFS 实例中的单独机器上运行的软件。

它负责管理文件系统名称空间和控制外部客户机的访问。NameNode 决定是否将文件映射到 DataNode 上的复制块上。

对于最常见的 3 个复制块，第一个复制块存储在同一机架的不同节点上，最后一个复制块存储在不同机架的某个节点上。

实际的 I/O事务并没有经过 NameNode，只有表示 DataNode 和块的文件映射的元数据经过 NameNode。

当外部客户机发送请求要求创建文件时，NameNode 会以块标识和该块的第一个副本的 DataNode IP 地址作为响应，这个 NameNode 还会通知其他将要接收该块的副本的 DataNode。

NameNode 在一个称为 FsImage 的文件中存储所有关于文件系统名称空间的信息。

这个文件和一个包含所有事务的记录文件（这里是 EditLog）将存储在 NameNode 的本地文件系统上。FsImage 和 EditLog 文件也需要复制副本，以防文件损坏或 NameNode 系统丢失。

NameNode本身不可避免地具有SPOF单点失效的风险，主备模式并不能解决这个问题，通过Hadoop Non-stop namenode才能实现100% uptime可用时间。

　　DataNode

DataNode 也是一个通常在 HDFS实例中的单独机器上运行的软件。

Hadoop 集群包含一个 NameNode 和大量 DataNode。

DataNode 通常以机架的形式组织，机架通过一个交换机将所有系统连接起来。

Hadoop 的一个假设是：机架内部节点之间的传输速度快于机架间节点的传输速度。

DataNode 响应来自 HDFS 客户机的读写请求。它们还响应来自 NameNode 的创建、删除和复制块的命令。

NameNode 依赖来自每个 DataNode 的定期心跳（heartbeat）消息。每条消息都包含一个块报告，NameNode 可以根据这个报告验证块映射和其他文件系统元数据。

如果 DataNode 不能发送心跳消息，NameNode 将采取修复措施，重新复制在该节点上丢失的块。

实验步骤及结果：

1.搭建平台（全分布式hadoop + eclipse Neon.1 + JDK1.8）

　　集群搭建：

　　主机两台（可拓展）：

　　（1）两个主机系统均为Ubuntu 16.04 LTS

　　　　详情：

　　　　　　master 192.168.:103.26（虚拟机）

　　　　　　slave2 192.168.103.22（物理机）

　　　　　　注：

　　　　　　　　（1）slave1是在同学的笔记本上，因为他的笔记本总是飘忽不定，所以这次博客上就先不写他的ip地址

　　　　　　　　（2）master是虚拟机的理由就是第一次尝试怕配错环境，导致崩溃，所以用了VMware为master，方便拯救平台

　　（2）hadoop平台版本都为最新稳定版2.7.3(解压及安装hadoop)　　　　　　

　　　　　　下载地址：Hadoop官网 http://hadoop.apache.org/releases.html

　　　　　　步骤1：点开网页以后，点击红色箭头所指的链接

　　　　　　步骤2：点开后如下图

　　　　　　步骤3：选择一个链接下载（个人推荐最后一个 tsinghua.edu.cn 清华大学链接源比较好）

　　　　　　步骤4：下载完后打开文件管理器，选择Downloads文件夹（如果修改主要文件夹名字为中文的，应选择“下载”）

　　　　　　步骤5：解压到指定路径

　　　　　　步骤5.1：在当前文件夹下右键 - 在终端打开键入su root命令

　　　　　　步骤5.2：输入root用户密码后，如下图所示

　　　　　　步骤5.3：键入解压命令

sudo tar zxvf hadoop-2.7.3.tar.gz -C /usr/local/hadoop

　　　　　　　　（注意：如果提示hadoop文件夹不存在的，可以在root用户下用cd命令到 /usr/local路径下键入 sudo mkdir /hadoop 创建夹）

　　　　　　步骤5.4：解压后如下图所示

　　　　　　　　（注意：路径满足如图所示即可，或自行定义）

　　　　至此hadoop前期下载准备工作已经完成。接下准备java环境的配置

　　（3）JDK版本为java8-oracle（配置java环境）

　　　　　（环境：系统稳定联网状态下）

　　　　　步骤1：打开终端键入命令(root用户模式可以不用加sudo前缀)

sudo add-apt-repository ppa:webupd8team/java

　　　　　　步骤2：出现一段文字后按回车继续

　　　　　　步骤3：继续键入命令

sudo apt-get update

　　　　　　步骤4：待系统加载完所有下载源

　　　　　　步骤5：键入安装命令

sudo apt-get install oracle-java8-installer

　　　　　　步骤6：等待下载结束（过程稍微有点漫长）

　　　　　　这个版本的java默认安装在 /usr/lib/jvm文件夹下

　　　　　　安装结束后配置环境变量

　　　　　　终端输入：

sudo gedit /etc/profile

　　　　　　步骤7：配置完后，按 ctrl + s 保存

　　　　　　步骤8：在终端中输入

sudo source /etc/profile

　　　　　　使配置的环境变量生效

　　　　　　步骤9：和在Windows下配置一样，在终端测试java和javac命令是否生效，在linux下可以多测试下jps命令看java进程号

　　　　　　至此java环境变量配置完毕

　　（4）SSH免密配置

　　　　SSH 是目前较可靠，专为远程登录会话和其他网络服务提供安全性的协议。利用 SSH 协议可以有效防止远程管理过程中的信息泄露问题。SSH最初是UNIX系统上的一个程序，后来又迅速扩展到其他操作平台。

　　　　SSH在正确使用时可弥补网络中的漏洞。SSH客户端适用于多种平台。

　　　　　　Ubuntu Linux下配置免密登录主要依靠 ssh localhost的命令

　　　　　　！！注意,如果改过 /etc/hosts 下的内容需要重新配置（下图是我的例子）

　　　　由于后期为了避免hadoop的一些端口和IP错误，所以我把localhost的名字改了，顺带把 /etc/hostname 的名字也改了。

　　　　改了上述的 hosts 和 hostname的名字后，记得重启电脑或者虚拟机

　　　　192.168.91.45是我虚拟的IP的地址名字叫master 相当于没有改变配置文件之前的 127.0.0.1 localhost

　　　　所以配置ssh免密的时候是键入 ssh master 而不是 ssh localhost

　　　　话不多说！

　　　　步骤0：SSH需要安装OpenSSH-server(如果已经安装则无需理会)

sudo apt-get install openssh-server

　　　　步骤1：在非root用户模式下打开终端键入ssh localhost（或者是定义的用户名）

　　　　步骤2：提示输入密码，输入你的ssh密码（自己记得住就好）

　　　　步骤3：输入完以后，测试一下ssh localhost（或是自定义名字），输入密码后是否如下图弹出一些信息

　　　　步骤4：如果下午所示后，则创建ssh成功

　　　　步骤5：创建免密登录（不需要关闭终端），键入如下命令

ssh-keygen -t rsa

　　　　步骤6：一直按回车直至出现RSA窗口即可

　　　　步骤7：键入命令

sudo cp .ssh/id_rsa.pub .ssh/authorized_keys

　　　　步骤8：验证免密登录，输入ssh localhost（或者自定义的名字），是否还需要输入密码登录

　　　　root用户下：

　　　　步骤1：进入root用户模式（用户模式下在终端键盘入：su root，输入root密码即可）

　　　　步骤2：进入ssh配置文件

gedit /etc/ssh/sshd_config

　　　　步骤3：把PermitRootLogin的字段改成 yes（原来的好像是Prohibit xxxx的），有点忘记了。总之改成yes就可以了

　　　　步骤4：保存退出终端

　　　　步骤5：打开新的终端键入命令

sudo service ssh restart

　　　　重启ssh服务之后，打开终端

　　　　步骤6：进入root用户模式下，键入 ssh localhost（或是你的自定义名字）

　　　　步骤7：输入自定义ssh密码后，与用户模式下的类似

　　　　步骤8：键入 ssh-keygen -t rsa 创建RSA密钥

　　　　步骤9：一直回车直至出现RSA密钥图，（如果提示Overwrite 输入 y 即可）

　　　　步骤10：键入配置免密的命令

cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

　　　　步骤11：完成后，在root用户模式输入 ssh localhost（或自定义名字）后，如下图所示即可。

　　　　至此，root用户和普通用户模式的ssh免密配置完成。

　　（4.1）SSH免密配置(节点篇)

　　　　　　需求：如果每个节点都需要下载安装hadoop ，则大量耗费人力物力。

　　　　　　解决：所以需要一个SSH来远程发送hadoop包分发给每个节点。

　　　　　　接下来来讲解master打通每个节点的连接方式（单节点和多节点一样，只要配置好就可以进行连接）

　　　　　　步骤1：在hosts文件中配置好各子节点的ip地址以及名称（如下图）

　　　　　　步骤2：编辑好hosts文件保存并关闭，（root用户模式下）打开终端输入

ssh-copy-id -i ~/.ssh/id_rsa.pub root@slave* 
(星号代表子节点号码，或者把slave*换成自定义的名称)

　　　　　　步骤3：提示输入，子节点的登录密码，输入完成后，等待命令完成

　　　　　　步骤4：在终端中输入 ssh slave*(或者自定义名字)，如下图：

　　　　　步骤5：ssh打通master和子节点的通道，可以通过scp命令传输数据了。

　　　　　至此，完成对于子节点的ssh免密访问配置。

　　（5）hadoop平台版本都为最新稳定版2.7.3(解压及安装hadoop)

　　　　hadoop配置下主要注意配置文件路径的问题

　　　　主要包括：hadoop根目录下 /etc/hadoop 里面的xml配置文件

　　　　　　例：hadoop-env.sh , hdfs-site.xml, mapred-site.xml , core-site.xml , yarn-site.xml

　　　　　　注：mapred-site.xml需要复制出来到本路径，原本是mapred-site.xml.template 需要用 cp 命令复制并改名字

　　　　　　　　或者可以通过 gedit 命令创建一个新的mapred-site.xml，把模板内的内容复制过去，然后再进行配置

　　　　　　配置文件1：hadoop-env.sh（配置环境变量，让hadoop识别）

　　　　　　配置文件2：core-site.xml

<configuration><property><name>fs.default.namename><value>hdfs://master:8020value>property><property><name>io.file.buffer.sizename><value>131072value>property><property><name>hadoop.tmp.dirname><value>/home/hadoop/tmpvalue>property><property><name>hadoop.proxyuser.hadoop.hostsname><value>*value>property><property><name>hadoop.proxyuser.hadoop.groupname><value>*value>property><property><name>dfs.permissionsname><value>falsevalue>property>
configuration>

　　　　　　配置文件3：hdfs-site.xml

<configuration><property><name>dfs.namenode.secondary.http-addressname><value>master:9000value>property><property><name>dfs.namenode.name.dirname><value>file:/home/hadoop/dfs/namevalue>property><property><name>dfs.datanode.data.dirname><value>file:/home/hadoop/dfs/datavalue>property><property><name>dfs.replicationname><value>3value>property><property><name>dfs.webhdfs.enabledname><value>truevalue>property>
configuration>

　　　　　　配置文件4： mapred-site.xml

<configuration><property><name>mapreduce.framework.namename><value>yarnvalue>property><property><name>mapred.job.trackername><value>master:9001value>property><property><name>mapred.job.tracker.http.addressname><value>master:50030value>property><property><name>mapreduce.jobhistory.addressname><value>master:10020value>property><property><name>mapreduce.jobhistory.webapp.addressname><value>master:19888value>property>
configuration>

　　　　　　配置文件5：yarn-site.xml

<configuration><property><name>yarn.nodemanager.aux-servicesname><value>mapreduce_shufflevalue>property><property><name>yarn.nodemanager.aux-services.mapreduce.shuffle.classname><value>org.apache.hadoop.mapred.ShuffleHandlervalue>property><property><name>yarn.resourcemanager.addressname><value>master:8032value>property><property><name>yarn.resourcemanager.scheduler.addressname><value>master:8030value>property><property><name>yarn.resourcemanager.resource-tracker.addressname><value>master:8031value>property><property><name>yarn.resourcemanager.admin.addressname><value>master:8033value>property><property><name>yarn.resourcemanager.webapp.addressname><value>master:8088value>property>
configuration>

　　　　　　！！！注：如果是master节点（即服务器）需要添加多一个slaves文件指定slave

　　　　　　配置文件6：slaves（选）

slave2 192.168.90.33

　　　　最后步骤：以上配置文件配置完毕后打开终端窗口，输入

hadoop namenode -format

　　　　出现如下结果，没有JAVA报错即可

　　　　初始化hadoop namenode节点成功！

　　　　打开终端利用 cd 命令进入hadoop启动命令文件下

cd /usr/local/hadoop/hadoop-2.7.3/sbin

　　　　键入如下命令启动hadoop（root用户模式下）　　　　

./start-all.sh

　　　　关闭hadoop则键入命令关闭

./stop-all.sh

　　　　输入jps在master节点测试，如果如上图所示则测试成功

　　　　在ssh slave2 节点输入jps测试

　　　　通过hadoop 自带命令

hadoop dfsadmin -report

　　　　如上图所示输出Live Datanodes，说明有存活节点，死节点为空。

　　　　证明集群配置成功！

　　（6）集群安装hadoop（完成Master节点的hadoop安装以及SSH的搭建）　　　　

　　　　构建好master与各个slave之间的ssh通信，如下图所示

　　　　步骤1：测试ssh命令与各节点间的通信

　　　　步骤2：确认本机的hadoop安装地址

　　　　步骤3：

scp –r /usr/local/hadoop/ root@slaver2:/usr/local/hadoop

　　　　把master上的hadoop分发给slave2节点（其他节点依次类推，只要搭好ssh就可以传输）。

　　　　传输过程有点久，耐心等候。

　　　　步骤4：在slave节点上配置环境变量

HADOOP_HOME=/usr/local/Hadoop  PATH=$PATH:${HADOOP_HOME}/bin:${HADOOP_HOME}/sbin

　　　　步骤5：在master启动hadoop进行测试

Namenode界面 50070端口

hadoop管理界面 8088端口

hadoop SecondaryNamenode 管理界面端口9000

　　（7）hadoop Wordcount测试（完成eclipse和eclipse hadoop插件安装）

　　　　步骤0：安装eclipse和eclipse hadoop插件

　　　　　　步骤0.1：安装eclipse

　　　　下载后，解压到自定义路径，解压后如所示

　　　　　　在此给出eclipse hadoop插件下载（http://pan.baidu.com/s/1mi6UP5I）

　　　　　　下载后，把jar放到eclipse根目录的dropins的目录

　　　　　　在根目录进入终端，进入root用户模式，输入

./eclipse

　　　　　　进入eclipse界面，完成安装。

　　　　步骤1：启动hadoop完成上述集群测试

　　　　步骤2：通过终端把测试数据 test.txt上传到hdfs中（test.txt为hadoop跟目录下的NOTICE.txt）

　　　　　　步骤2.1：在hdfs目录下创建input文件夹

hadoop fs -mkdir /input
hadoop fs -put test.txt /input

　　　　如图所示，则上传成功。

　　　　如果权限不对的话可以修改权限

hadoop fs -chmod -R 777 /input/test.txt

　　　　步骤3：打开eclipse，并完成mapreduce的wordcount代码，完成eclipse hadoop的配置

　　　步骤4：确保左上角的DFS Location能够显示hdfs中的文件目录

WordCount代码：

package org.apache.hadoop.examples;import java.io.IOException;
import java.util.StringTokenizer;import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;public class WordCount {public static class TokenizerMapperextends Mapper{private final static IntWritable one = new IntWritable(1);private Text word = new Text();public void map(Object key, Text value, Context context) throws IOException, InterruptedException {StringTokenizer itr = new StringTokenizer(value.toString());while (itr.hasMoreTokens()) {word.set(itr.nextToken());context.write(word, one);}}}public static class IntSumReducer extends Reducer {private IntWritable result = new IntWritable();public void reduce(Text key, Iterable values,Context context) throws IOException, InterruptedException {int sum = 0;for (IntWritable val : values) {sum += val.get();}result.set(sum);context.write(key, result);}}public static void main(String[] args) throws Exception {Configuration conf = new Configuration();Job job = Job.getInstance(conf, "word count");job.setJarByClass(WordCount.class);job.setMapperClass(TokenizerMapper.class);job.setCombinerClass(IntSumReducer.class);job.setReducerClass(IntSumReducer.class);job.setOutputKeyClass(Text.class);job.setOutputValueClass(IntWritable.class);FileInputFormat.addInputPath(job, new Path(args[0]));FileOutputFormat.setOutputPath(job, new Path(args[1]));System.exit(job.waitForCompletion(true) ? 0 : 1);}
}

log4j日志文件：

log4j.rootLogger=debug, stdout, R 
#log4j.rootLogger=stdout, R   
log4j.appender.stdout=org.apache.log4j.ConsoleAppender   
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout   
#log4j.appender.stdout.layout.ConversionPattern=%5p - %m%n   
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n  
log4j.appender.R=org.apache.log4j.RollingFileAppender   
log4j.appender.R.File=log4j.log   
log4j.appender.R.MaxFileSize=100KB   
log4j.appender.R.MaxBackupIndex=1   
log4j.appender.R.layout=org.apache.log4j.PatternLayout   
#log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n   
log4j.appender.R.layout.ConversionPattern=%d %p [%c] - %m%n  
#log4j.logger.com.codefutures=DEBUG

　　　　步骤5：配置Run Configuration

　　　　步骤6：右键Run As - Run On Hadoop（日志我选用了DEBUG模式测试，所以会很长，但是方便测试）

　　　　此时，master hdfs多出一个文件夹存放分词结果

　　　　下列图为结果部分截图：

　　　　至此，从安装到mapreduce Wordcount测试全部结束了。

　　　　hadoop2.7.6全模式下，结合eclipse hadoop插件配置，完成Wordcount测试。

实验结果分析：

1、Wordcount项目代码是结合Map-reduce的核心思想，以及对于Java输入输出流的认识所编写，也参考了一下"大牛"博客编写的，能够基本实现分词-词频统计。

2、小项目的分词的效果显然没有Python Jieba分词来的精确，但是基于Hadoop Mapreduce的运算，分词一篇词汇众多的文档只需要5秒。（如需查看请点开。文档来源：Hadoop LICENSE.txt）

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license: (a) under intellectual property rights (other than patent or
trademark) Licensable by Contributor to use, reproduce, modify, display,
perform, sublicense and distribute the Modifications created by such Contributor
(or portions thereof), either on an unmodified basis, with other Modifications,
as Covered Software and/or as part of a Larger Work; and (b) under Patent
Claims infringed by the making, using, or selling of Modifications made by that
Contributor either alone and/or in combination with its Contributor Version (or
portions of such combination), to make, use, sell, offer for sale, have made,
and/or otherwise dispose of: (1) Modifications made by that Contributor (or
portions thereof); and (2) the combination of Modifications made by that
Contributor with its Contributor Version (or portions of such
combination). (c) The licenses granted in Sections 2.2(a) and 2.2(b) are
effective on the date Contributor first distributes or otherwise makes the
Modifications available to a third party.(d) Notwithstanding Section 2.2(b)
above, no patent license is granted: (1) for any code that Contributor has
deleted from the Contributor Version; (2) for infringements caused by:
(i) third party modifications of Contributor Version, or (ii) the combination
of Modifications made by that Contributor with other software (except as part of
the Contributor Version) or other devices; or (3) under Patent Claims infringed
by Covered Software in the absence of Modifications made by that
Contributor. 3. Distribution Obligations. 3.1. Availability of Source
Code. Any Covered Software that You distribute or otherwise make available in
Executable form must also be made available in Source Code form and that Source
Code form must be distributed only under the terms of this License. You must
include a copy of this License with every copy of the Source Code form of the
Covered Software You distribute or otherwise make available. You must inform
recipients of any such Covered Software in Executable form as to how they can
obtain such Covered Software in Source Code form in a reasonable manner on or
through a medium customarily used for software exchange. 3.2.
Modifications. The Modifications that You create or to which You contribute are
governed by the terms of this License. You represent that You believe Your
Modifications are Your original creation(s) and/or You have sufficient rights to
grant the rights conveyed by this License. 3.3. Required Notices. You must
include a notice in each of Your Modifications that identifies You as the
Contributor of the Modification. You may not remove or alter any copyright,
patent or trademark notices contained within the Covered Software, or any
notices of licensing or any descriptive text giving attribution to any
Contributor or the Initial Developer. 3.4. Application of Additional Terms.
You may not offer or impose any terms on any Covered Software in Source Code
form that alters or restricts the applicable version of this License or the
recipients rights hereunder. You may choose to offer, and to charge a fee for,
warranty, support, indemnity or liability obligations to one or more recipients
of Covered Software. However, you may do so only on Your own behalf, and not on
behalf of the Initial Developer or any Contributor. You must make it absolutely
clear that any such warranty, support, indemnity or liability obligation is
offered by You alone, and You hereby agree to indemnify the Initial Developer
and every Contributor for any liability incurred by the Initial Developer or
such Contributor as a result of warranty, support, indemnity or liability terms
You offer.3.5. Distribution of Executable Versions. You may distribute the
Executable form of the Covered Software under the terms of this License or under
the terms of a license of Your choice, which may contain terms different from
this License, provided that You are in compliance with the terms of this License
and that the license for the Executable form does not attempt to limit or alter
the recipients rights in the Source Code form from the rights set forth in this
License. If You distribute the Covered Software in Executable form under a
different license, You must make it absolutely clear that any terms which differ
from this License are offered by You alone, not by the Initial Developer or
Contributor. You hereby agree to indemnify the Initial Developer and every
Contributor for any liability incurred by the Initial Developer or such
Contributor as a result of any such terms You offer. 3.6. Larger Works. You
may create a Larger Work by combining Covered Software with other code not
governed by the terms of this License and distribute the Larger Work as a single
product. In such a case, You must make sure the requirements of this License are
fulfilled for the Covered Software. 4. Versions of the License. 4.1.
New Versions. Sun Microsystems, Inc. is the initial license steward and may
publish revised and/or new versions of this License from time to time. Each
version will be given a distinguishing version number. Except as provided in
Section 4.3, no one other than the license steward has the right to modify this
License. 4.2. Effect of New Versions. You may always continue to use,
distribute or otherwise make the Covered Software available under the terms of
the version of the License under which You originally received the Covered
Software. If the Initial Developer includes a notice in the Original Software
prohibiting it from being distributed or otherwise made available under any
subsequent version of the License, You must distribute and make the Covered
Software available under the terms of the version of the License under which You
originally received the Covered Software. Otherwise, You may also choose to use,
distribute or otherwise make the Covered Software available under the terms of
any subsequent version of the License published by the license
steward. 4.3. Modified Versions. When You are an Initial Developer and You
want to create a new license for Your Original Software, You may create and use
a modified version of this License if You: (a) rename the license and remove
any references to the name of the license steward (except to note that the
license differs from this License); and (b) otherwise make it clear that the
license contains terms which differ from this License. 5. DISCLAIMER OF WARRANTY.COVERED SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN AS IS BASIS,
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT
LIMITATION, WARRANTIES THAT THE COVERED SOFTWARE IS FREE OF DEFECTS,
MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR NON-INFRINGING. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE COVERED SOFTWARE IS WITH YOU. SHOULD ANY
COVERED SOFTWARE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT THE INITIAL DEVELOPER
OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY SERVICING, REPAIR OR
CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
LICENSE. NO USE OF ANY COVERED SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
THIS DISCLAIMER. 6. TERMINATION. 6.1. This License and the rights
granted hereunder will terminate automatically if You fail to comply with terms
herein and fail to cure such breach within 30 days of becoming aware of the
breach. Provisions which, by their nature, must remain in effect beyond the
termination of this License shall survive. 6.2. If You assert a patent
infringement claim (excluding declaratory judgment actions) against Initial
Developer or a Contributor (the Initial Developer or Contributor against whom
You assert such claim is referred to as Participant) alleging that the
Participant Software (meaning the Contributor Version where the Participant is a
Contributor or the Original Software where the Participant is the Initial
Developer) directly or indirectly infringes any patent, then any and all rights
granted directly or indirectly to You by such Participant, the Initial Developer
(if the Initial Developer is not the Participant) and all Contributors under
Sections 2.1 and/or 2.2 of this License shall, upon 60 days notice from
Participant terminate prospectively and automatically at the expiration of such
60 day notice period, unless if within such 60 day period You withdraw Your
claim with respect to the Participant Software against such Participant either
unilaterally or pursuant to a written agreement with Participant. 6.3. In
the event of termination under Sections 6.1 or 6.2 above, all end user licenses
that have been validly granted by You or any distributor hereunder prior to
termination (excluding licenses granted to You by any distributor) shall survive
termination. 7. LIMITATION OF LIABILITY.
UNDER NO CIRCUMSTANCES AND UNDER
NO LEGAL THEORY, WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE,
SHALL YOU, THE INITIAL DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF
COVERED SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO ANY
PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY
CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOST PROFITS, LOSS OF
GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER
COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN INFORMED OF THE
POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF LIABILITY SHALL NOT APPLY TO
LIABILITY FOR DEATH OR PERSONAL INJURY RESULTING FROM SUCH PARTYS NEGLIGENCE TO
THE EXTENT APPLICABLE LAW PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT
ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO
THIS EXCLUSION AND LIMITATION MAY NOT APPLY TO YOU. 8. U.S. GOVERNMENT END USERS.The Covered Software is a commercial item, as that term is defined in
48 C.F.R. 2.101 (Oct. 1995), consisting of commercial computer software (as
that term is defined at 48 C.F.R.  252.227-7014(a)(1)) and commercial computer
software documentation as such terms are used in 48 C.F.R. 12.212 (Sept.
1995). Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through
227.7202-4 (June 1995), all U.S. Government End Users acquire Covered Software
with only those rights set forth herein. This U.S. Government Rights clause is
in lieu of, and supersedes, any other FAR, DFAR, or other clause or provision
that addresses Government rights in computer software under this
License. 9. MISCELLANEOUS.
This License represents the complete agreement
concerning subject matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent necessary to
make it enforceable. This License shall be governed by the law of the
jurisdiction specified in a notice contained within the Original Software
(except to the extent applicable law, if any, provides otherwise), excluding
such jurisdictions conflict-of-law provisions. Any litigation relating to this
License shall be subject to the jurisdiction of the courts located in the
jurisdiction and venue specified in a notice contained within the Original
Software, with the losing party responsible for costs, including, without
limitation, court costs and reasonable attorneys fees and expenses. The
application of the United Nations Convention on Contracts for the International
Sale of Goods is expressly excluded. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
apply to this License. You agree that You alone are responsible for compliance
with the United States export administration regulations (and the export control
laws and regulation of any other countries) when You use, distribute or
otherwise make available any Covered Software. 10. RESPONSIBILITY FOR CLAIMS.
As between Initial Developer and the Contributors, each party is
responsible for claims and damages arising, directly or indirectly, out of its
utilization of rights under this License and You agree to work with Initial
Developer and Contributors to distribute such responsibility on an equitable
basis. Nothing herein is intended or shall be deemed to constitute any admission
of liability. The binary distribution of this product bundles these dependencies under the
following license:
Jersey 1.9
JAXB API bundle for GlassFish V3 2.2.2
JAXB RI 2.2.3
--------------------------------------------------------------------------------
COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL)Version 1.11. Definitions.1.1. “Contributor” means each individual or entity that creates or
contributes to the creation of Modifications.
1.2. “Contributor Version” means the combination of the Original Software,
prior Modifications used by a Contributor (if any), and the Modifications made
by that particular Contributor.
1.3. “Covered Software” means (a) the Original Software, or (b)
Modifications, or (c) the combination of files containing Original Software with
files containing Modifications, in each case including portions thereof.
1.4. “Executable” means the Covered Software in any form other than Source
Code.
1.5. “Initial Developer” means the individual or entity that first makes
Original Software available under this License.
1.6. “Larger Work” means a work which combines Covered Software or portions
thereof with code not governed by the terms of this License.
1.7. “License” means this document.
1.8. “Licensable” means having the right to grant, to the maximum extent
possible, whether at the time of the initial grant or subsequently acquired, any
and all of the rights conveyed herein.
1.9. “Modifications” means the Source Code and Executable form of any of the
following:
A. Any file that results from an addition to, deletion from or modification of
the contents of a file containing Original Software or previous Modifications;
B. Any new file that contains any part of the Original Software or previous
Modification; or
C. Any new file that is contributed or otherwise made available under the terms
of this License.
1.10. “Original Software” means the Source Code and Executable form of
computer software code that is originally released under this License.
1.11. “Patent Claims” means any patent claim(s), now owned or hereafter
acquired, including without limitation, method, process, and apparatus claims,
in any patent Licensable by grantor.
1.12. “Source Code” means (a) the common form of computer software code in
which modifications are made and (b) associated documentation included in or
with such code.
1.13. “You” (or “Your”) means an individual or a legal entity exercising
rights under, and complying with all of the terms of, this License. For legal
entities, “You” includes any entity which controls, is controlled by, or is
under common control with You. For purposes of this definition, “control”
means (a) the power, direct or indirect, to cause the direction or management of
such entity, whether by contract or otherwise, or (b) ownership of more than
fifty percent (50%) of the outstanding shares or beneficial ownership of such
entity.2. License Grants.2.1. The Initial Developer Grant.Conditioned upon Your compliance with Section 3.1 below and subject to
third party intellectual property claims, the Initial Developer hereby grants
You a world-wide, royalty-free, non-exclusive license:
(a) under intellectual
property rights (other than patent or trademark) Licensable by Initial
Developer, to use, reproduce, modify, display, perform, sublicense and
distribute the Original Software (or portions thereof), with or without
Modifications, and/or as part of a Larger Work; and
(b) under Patent Claims
infringed by the making, using or selling of Original Software, to make, have
made, use, practice, sell, and offer for sale, and/or otherwise dispose of the
Original Software (or portions thereof).
(c) The licenses granted in Sections
2.1(a) and (b) are effective on the date Initial Developer first distributes or
otherwise makes the Original Software available to a third party under the terms
of this License.
(d) Notwithstanding Section 2.1(b) above, no patent license is
granted: (1) for code that You delete from the Original Software, or (2) for
infringements caused by: (i) the modification of the Original Software, or (ii)
the combination of the Original Software with other software or devices.2.2. Contributor Grant.Conditioned upon Your compliance with Section 3.1 below and
subject to third party intellectual property claims, each Contributor hereby
grants You a world-wide, royalty-free, non-exclusive license:
(a) under
intellectual property rights (other than patent or trademark) Licensable by
Contributor to use, reproduce, modify, display, perform, sublicense and
distribute the Modifications created by such Contributor (or portions thereof),
either on an unmodified basis, with other Modifications, as Covered Software
and/or as part of a Larger Work; and
(b) under Patent Claims infringed by the
making, using, or selling of Modifications made by that Contributor either alone
and/or in combination with its Contributor Version (or portions of such
combination), to make, use, sell, offer for sale, have made, and/or otherwise
dispose of: (1) Modifications made by that Contributor (or portions thereof);
and (2) the combination of Modifications made by that Contributor with its
Contributor Version (or portions of such combination).
(c) The licenses granted
in Sections 2.2(a) and 2.2(b) are effective on the date Contributor first
distributes or otherwise makes the Modifications available to a third
party.
(d) Notwithstanding Section 2.2(b) above, no patent license is granted:
(1) for any code that Contributor has deleted from the Contributor Version; (2)
for infringements caused by: (i) third party modifications of Contributor
Version, or (ii) the combination of Modifications made by that Contributor with
other software (except as part of the Contributor Version) or other devices; or
(3) under Patent Claims infringed by Covered Software in the absence of
Modifications made by that Contributor.3. Distribution Obligations.3.1. Availability of Source Code.
Any Covered Software that You distribute or
otherwise make available in Executable form must also be made available in
Source Code form and that Source Code form must be distributed only under the
terms of this License. You must include a copy of this License with every copy
of the Source Code form of the Covered Software You distribute or otherwise make
available. You must inform recipients of any such Covered Software in Executable
form as to how they can obtain such Covered Software in Source Code form in a
reasonable manner on or through a medium customarily used for software
exchange.
3.2. Modifications.
The Modifications that You create or to which
You contribute are governed by the terms of this License. You represent that You
believe Your Modifications are Your original creation(s) and/or You have
sufficient rights to grant the rights conveyed by this License.
3.3. Required Notices.
You must include a notice in each of Your Modifications that
identifies You as the Contributor of the Modification. You may not remove or
alter any copyright, patent or trademark notices contained within the Covered
Software, or any notices of licensing or any descriptive text giving attribution
to any Contributor or the Initial Developer.
3.4. Application of Additional Terms.
You may not offer or impose any terms on any Covered Software in Source
Code form that alters or restricts the applicable version of this License or the
recipients' rights hereunder. You may choose to offer, and to charge a fee for,
warranty, support, indemnity or liability obligations to one or more recipients
of Covered Software. However, you may do so only on Your own behalf, and not on
behalf of the Initial Developer or any Contributor. You must make it absolutely
clear that any such warranty, support, indemnity or liability obligation is
offered by You alone, and You hereby agree to indemnify the Initial Developer
and every Contributor for any liability incurred by the Initial Developer or
such Contributor as a result of warranty, support, indemnity or liability terms
You offer.
3.5. Distribution of Executable Versions.
You may distribute the
Executable form of the Covered Software under the terms of this License or under
the terms of a license of Your choice, which may contain terms different from
this License, provided that You are in compliance with the terms of this License
and that the license for the Executable form does not attempt to limit or alter
the recipient's rights in the Source Code form from the rights set forth in
this License. If You distribute the Covered Software in Executable form under a
different license, You must make it absolutely clear that any terms which differ
from this License are offered by You alone, not by the Initial Developer or
Contributor. You hereby agree to indemnify the Initial Developer and every
Contributor for any liability incurred by the Initial Developer or such
Contributor as a result of any such terms You offer.
3.6. Larger Works.
You
may create a Larger Work by combining Covered Software with other code not
governed by the terms of this License and distribute the Larger Work as a single
product. In such a case, You must make sure the requirements of this License are
fulfilled for the Covered Software.4. Versions of the License.4.1. New Versions.
Oracle is the initial license steward and may publish revised and/or
new versions of this License from time to time. Each version will be given a
distinguishing version number. Except as provided in Section 4.3, no one other
than the license steward has the right to modify this License.
4.2. Effect of New Versions.
You may always continue to use, distribute or otherwise make the
Covered Software available under the terms of the version of the License under
which You originally received the Covered Software. If the Initial Developer
includes a notice in the Original Software prohibiting it from being distributed
or otherwise made available under any subsequent version of the License, You
must distribute and make the Covered Software available under the terms of the
version of the License under which You originally received the Covered Software.
Otherwise, You may also choose to use, distribute or otherwise make the Covered
Software available under the terms of any subsequent version of the License
published by the license steward.
4.3. Modified Versions.
When You are an
Initial Developer and You want to create a new license for Your Original
Software, You may create and use a modified version of this License if You: (a)
rename the license and remove any references to the name of the license steward
(except to note that the license differs from this License); and (b) otherwise
make it clear that the license contains terms which differ from this
License.5. DISCLAIMER OF WARRANTY.COVERED SOFTWARE IS PROVIDED UNDER THIS
LICENSE ON AN “AS IS” BASIS, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES THAT THE COVERED SOFTWARE
IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR
NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
SOFTWARE IS WITH YOU. SHOULD ANY COVERED SOFTWARE PROVE DEFECTIVE IN ANY
RESPECT, YOU (NOT THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE
COST OF ANY NECESSARY SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF
WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. NO USE OF ANY COVERED
SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.6. TERMINATION.6.1. This License and the rights granted hereunder will
terminate automatically if You fail to comply with terms herein and fail to cure
such breach within 30 days of becoming aware of the breach. Provisions which, by
their nature, must remain in effect beyond the termination of this License shall
survive.
6.2. If You assert a patent infringement claim (excluding declaratory
judgment actions) against Initial Developer or a Contributor (the Initial
Developer or Contributor against whom You assert such claim is referred to as
“Participant”) alleging that the Participant Software (meaning the
Contributor Version where the Participant is a Contributor or the Original
Software where the Participant is the Initial Developer) directly or indirectly
infringes any patent, then any and all rights granted directly or indirectly to
You by such Participant, the Initial Developer (if the Initial Developer is not
the Participant) and all Contributors under Sections 2.1 and/or 2.2 of this
License shall, upon 60 days notice from Participant terminate prospectively and
automatically at the expiration of such 60 day notice period, unless if within
such 60 day period You withdraw Your claim with respect to the Participant
Software against such Participant either unilaterally or pursuant to a written
agreement with Participant.
6.3. If You assert a patent infringement claim
against Participant alleging that the Participant Software directly or
indirectly infringes any patent where such claim is resolved (such as by license
or settlement) prior to the initiation of patent infringement litigation, then
the reasonable value of the licenses granted by such Participant under Sections
2.1 or 2.2 shall be taken into account in determining the amount or value of any
payment or license.
6.4. In the event of termination under Sections 6.1 or 6.2
above, all end user licenses that have been validly granted by You or any
distributor hereunder prior to termination (excluding licenses granted to You by
any distributor) shall survive termination.7. LIMITATION OF LIABILITY.UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT
(INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL YOU, THE INITIAL
DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF COVERED SOFTWARE, OR ANY
SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO ANY PERSON FOR ANY INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING,
WITHOUT LIMITATION, DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER
FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN
IF SUCH PARTY SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. THIS
LIMITATION OF LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL
INJURY RESULTING FROM SUCH PARTY'S NEGLIGENCE TO THE EXTENT APPLICABLE LAW
PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS EXCLUSION AND
LIMITATION MAY NOT APPLY TO YOU.8. U.S. GOVERNMENT END USERS.The Covered
Software is a “commercial item,” as that term is defined in 48 C.F.R. 2.101
(Oct. 1995), consisting of “commercial computer software” (as that term is
defined at 48 C.F.R. § 252.227-7014(a)(1)) and “commercial computer software
documentation” as such terms are used in 48 C.F.R. 12.212 (Sept. 1995).
Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4
(June 1995), all U.S. Government End Users acquire Covered Software with only
those rights set forth herein. This U.S. Government Rights clause is in lieu of,
and supersedes, any other FAR, DFAR, or other clause or provision that addresses
Government rights in computer software under this License.9. MISCELLANEOUS.This License represents the complete agreement concerning
subject matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent necessary to
make it enforceable. This License shall be governed by the law of the
jurisdiction specified in a notice contained within the Original Software
(except to the extent applicable law, if any, provides otherwise), excluding
such jurisdiction's conflict-of-law provisions. Any litigation relating to this
License shall be subject to the jurisdiction of the courts located in the
jurisdiction and venue specified in a notice contained within the Original
Software, with the losing party responsible for costs, including, without
limitation, court costs and reasonable attorneys' fees and expenses. The
application of the United Nations Convention on Contracts for the International
Sale of Goods is expressly excluded. Any law or regulation which provides that
the language of a contract shall be construed against the drafter shall not
apply to this License. You agree that You alone are responsible for compliance
with the United States export administration regulations (and the export control
laws and regulation of any other countries) when You use, distribute or
otherwise make available any Covered Software.10. RESPONSIBILITY FOR CLAIMS.As between Initial Developer and the Contributors, each party is
responsible for claims and damages arising, directly or indirectly, out of its
utilization of rights under this License and You agree to work with Initial
Developer and Contributors to distribute such responsibility on an equitable
basis. Nothing herein is intended or shall be deemed to constitute any admission
of liability.The binary distribution of this product bundles these dependencies under the
following license:
Protocol Buffer Java API 2.5.0
--------------------------------------------------------------------------------
This license applies to all parts of Protocol Buffers except the following:- Atomicops support for generic gcc, located insrc/google/protobuf/stubs/atomicops_internals_generic_gcc.h.This file is copyrighted by Red Hat Inc.- Atomicops support for AIX/POWER, located insrc/google/protobuf/stubs/atomicops_internals_power.h.This file is copyrighted by Bloomberg Finance LP.Copyright 2014, Google Inc.  All rights reserved.Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.Code generated by the Protocol Buffer compiler is owned by the owner
of the input file used when generating it.  This code is not
standalone and requires a support library to be linked with it.  This
support library is itself covered by the above license.For:
XML Commons External Components XML APIs 1.3.04
--------------------------------------------------------------------------------
By obtaining, using and/or copying this work, you (the licensee) agree that you
have read, understood, and will comply with the following terms and conditions.Permission to copy, modify, and distribute this software and its documentation,
with or without modification, for any purpose and without fee or royalty is
hereby granted, provided that you include the following on ALL copies of the
software and documentation or portions thereof, including modifications:
- The full text of this NOTICE in a location viewable to users of the
redistributed or derivative work.
- Any pre-existing intellectual property disclaimers, notices, or terms and
conditions. If none exist, the W3C Software Short Notice should be included
(hypertext is preferred, text is permitted) within the body of any redistributed
or derivative code.
- Notice of any changes or modifications to the files, including the date changes
were made. (We recommend you provide URIs to the location from which the code is
derived.)The binary distribution of this product bundles these dependencies under the
following license:
JUnit 4.11
ecj-4.3.1.jar
--------------------------------------------------------------------------------
Eclipse Public License - v 1.0THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC
LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM
CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.1. DEFINITIONS"Contribution" means:a) in the case of the initial Contributor, the initial code and documentation
distributed under this Agreement, and
b) in the case of each subsequent Contributor:
i) changes to the Program, and
ii) additions to the Program;
where such changes and/or additions to the Program originate from and are
distributed by that particular Contributor. A Contribution 'originates' from a
Contributor if it was added to the Program by such Contributor itself or anyone
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测试文档

心得体会：

　　　　1、实验完成结果到达预期目标，在搭建平台的过程耗费了很多学习成本，主要花在安装包的下载以及对于Linux系统的理解和hadoop配置文件的理解。

　　　　2、实验完成的过程中与小组成员分工合作，在搭建过程中自学了linux的命令操作以及linux系统的一些工作原理。

　　　　3、在搭建hadoop平台时，遇到很多匪夷所思的问题，通过hadoop平台自带的log文件，查看日志文件，百度搜索或者看国外网站的配置方式，再通过自己的尝试，解决问题。

　　　　4、在搭建过程体会最深的就是hadoop对于端口的使用很谨慎，第一次在尝试的时候没有仔细看清楚官网文档的端口设置，配置出错，导致进度耽误几天，最后才发现是端口的问题。

　　　　5、在搭建完后对于linux系统也有深刻的体会，对于linux的权限设置，SSH，以及基本的文件操作命令等有基本的掌握经验。

　　　　6、小组成员在第一次冲刺后决定更改软件工程项目，主要是为了适应目前的学习任务以及工作任务。小组成员目前在分析学校历年学生体质测试数据以及网络招聘岗位数据对应学校各二级学院的专业核心技能

　　　　　 Python Django项目属于python后端项目，初期小组成员定题是为了学习除java后端以外的另外一直后端开发。但是后期因为繁重的分析任务以及报告，所以决定开始寻找新的出路，也顺利在第三次冲刺前几天完成实验。

　　　　　虽然可能与软件工程的项目关系不太大，但是在搭建平台的过程，小组成员也深刻体会到团队合作的意义。以及对于大数据平台的理解，不再是觉得深不可测，改变对于大数据平台以及云计算的看法。

展望：

　　　　1、希望在接下来的寒假或者未来的时间点，完善自己的hadoop平台，通过hadoop平台提交小组的数据分析项目，利用Mapreduce并行化算法以及YARN集群分布式计算，提高数据分析的效率。

　　　　2、以及写一个基于hadoop平台的分布式爬虫，提高大数据的读取时间。

　　　　3、目前也在学习Spark，掌握与Mapreduce相类似的并行化运算框架，也希望在日后的使用中，结合HBase，Mapreduce/Spark搭建一个云计算平台项目。

　　　　4、在未来的时间，花更多时间从理解hadoop的核心架构，到理解hadoop的外沿，学习Spark，HBase，Pig，Mahout，Hive等核心工具的使用。

　　　　5、最近时间关注大数据方向注意到关联数据RDF的应用，也希望能尝试利用Sqoop读取关联数据，进行数据分析。

转载于:https://www.cnblogs.com/LeoSunhailin/p/6123253.html