Question

我正在尝试使用hadoop 2.4.0运行Map-reduce 我的代码对第三方jar有一些依赖，所以我使用eclipse export-＆gt; runnable Jar选项创建了一个FAT jar。

现在我使用

运行FAT jar

       hadoop jar ~/Documents/job.jar

我得到了例外

      java.lang.reflect.InvocationTargetException

上述异常是由此引起的：

Caused by: java.io.IOException: Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the correspond server addresses.
at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:120)
at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:82)
at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:75)
at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1255)
at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1251)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
at org.apache.hadoop.mapreduce.Job.connect(Job.java:1250)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1279)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1303)
at imgProc.MasterClass.main(MasterClass.java:84)
... 10 more

hadoop classpath

hduser@livingstream:/usr/local/hadoop$ hadoop classpath
/usr/local/hadoop-2.4.0/etc/hadoop:/usr/local/hadoop-`2.4.0/share/hadoop/common/lib/*:/usr/local/hadoop-2.4.0/share/hadoop/common/*:/usr/local/hadoop-2.4.0/share/hadoop/hdfs:/usr/local/hadoop-2.4.0/share/hadoop/hdfs/lib/*:/usr/local/hadoop-2.4.0/share/hadoop/hdfs/*:/usr/local/hadoop-2.4.0/share/hadoop/yarn/lib/*:/usr/local/hadoop-2.4.0/share/hadoop/yarn/*:/usr/local/hadoop-2.4.0/share/hadoop/mapreduce/lib/*:/usr/local/hadoop-2.4.0/share/hadoop/mapreduce/*:/usr/local/hadoop/contrib/capacity-scheduler/*.jar`

我的配置文件

mapred-site.xml中

<configuration>

    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>


</configuration>

芯-site.xml中

<configuration>

<property>
  <name>fs.default.name</name>
  <value>hdfs://localhost:54310</value>
</property>
<property>
  <name>hadoop.tmp.dir</name>
  <value>/usr/local/hadoop/data</value>
</property>



</configuration>

纱-site.xml中

<configuration>

<!-- Site specific YARN configuration properties -->
  <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
    </property>
    <property>
        <name>yarn.nodemanager.aux-services.mapreduce_shuffle.class</name>
        <value>org.apache.hadoop.mapred.ShuffleHandler</value>
    </property>
    <property>
        <name>yarn.resourcemanager.resource-tracker.address</name>
        <value>localhost:8025</value>
    </property>
    <property>
        <name>yarn.resourcemanager.scheduler.address</name>
        <value>localhost:8030</value>
    </property>
    <property>
        <name>yarn.resourcemanager.address</name>
        <value>localhost:8050</value>
    </property>
</configuration>

我不确定现在发生了什么，是因为JAR还是我的配置文件。任何人都有anyidea，任何感激之情！：）

Answer 1

错误信息清楚地表明，

Caused by: java.io.IOException: Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the correspond server addresses.

您必须配置mapred-site.xml and core-site.xml以及您应该执行的许多其他配置有关一步一步的信息，请参阅此链接Hadoop V2 setup

希望这会对你有所帮助。

IOException：无法初始化Cluster | hadoop 2.4.0

1 个答案: