我是hadoop/giraph和java的新手。作为任务的一部分，我下载了cloudera快速启动vm和giraph。我用这本书命名为“实用图形分析与Apache吉拉夫；作者：shaposhnik，roman，martella，claudio，logothetis，dionysios“我试着在第111页（twitter followership图）上运行第一个例子。
在群集2.6.0-mr1-cdh5.12.0上运行hadoop版本的pom.xml文件时，请查找以下错误

`[cloudera@quickstart first]$ mvn clean install
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building book-examples 1.0.0
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ book-examples ---
[INFO] Deleting /home/cloudera/workspace/first/target
[INFO] 
[INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ book-examples ---
[debug] execute contextualize
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ book-examples ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 1 source file to /home/cloudera/workspace/first/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[5,27] error: package org.apache.hadoop.io does not exist
[ERROR] /home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[6,27] error: package org.apache.hadoop.io does not exist
[ERROR] /home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[7,29] error: cannot find symbol
[ERROR]  package org.apache.hadoop.util
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[14,17] error: cannot find symbol
[ERROR]  class IntWritable
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[14,30] error: cannot find symbol
[ERROR]  class IntWritable
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[15,0] error: cannot find symbol
[ERROR]  class NullWritable
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[15,14] error: cannot find symbol
[ERROR]  class NullWritable
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[17,28] error: cannot find symbol
[ERROR]  class GiraphHelloWorld
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[18,3] error: cannot find symbol
[ERROR]  class GiraphHelloWorld
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[18,16] error: cannot find symbol
[ERROR]  class GiraphHelloWorld
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[19,12] error: cannot find symbol
[ERROR]  class GiraphHelloWorld
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[24,12] error: cannot find symbol
[ERROR]  class GiraphHelloWorld
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[24,25] error: cannot find symbol
[ERROR]  class GiraphHelloWorld
/home/cloudera/workspace/first/src/main/java/GiraphHelloWorld.java:[34,14] error: cannot find symbol
[INFO] 14 errors 
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 6.495s
[INFO] Finished at: Fri Dec 08 14:57:01 PST 2017
[INFO] Final Memory: 18M/57M

`
我根据堆栈溢出响应添加了cloudera存储库。请查找上述错误适用的更新pom xml：

`<?xml version="1.0" encoding="UTF-8"?>
<project>
<modelVersion>4.0.0</modelVersion>

<groupId>giraph</groupId>
<artifactId>book-examples</artifactId>
<version>1.0.0</version>

<dependencies>
<dependency>
<groupId>org.apache.giraph</groupId>
<artifactId>giraph-core</artifactId>
<version>1.1.0</version>
</dependency>

<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-core</artifactId>
<version>2.6.0-mr1-cdh5.12.0</version>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.4</version>
                <executions>
                    <execution>
                        <id>create-jar-bundle</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                        <configuration>
                            <descriptorRefs>
                                <descriptorRef>jar-with-dependencies</descriptorRef>
                            </descriptorRefs>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
</plugins>
</build>

<repositories>
        <repository>
            <id>cloudera</id>
            <url>https://repository.cloudera.com/artifactory/cloudera-repos</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>`

书中的hadoop版本是1.2.1。两个版本之间的图书依赖性存在问题。
如果有人能帮助我理解如何处理这个错误就太好了。
提前谢谢。