windows - Hadoop Windows 设置。运行 WordCountJob 时出错 : "No space available in any of the local directories"

Question

我正在按照这个视频教程尝试在我的机器上设置 hadoop。

• How to Install Hadoop on Windows 10

我已成功设置:从 sbin 目录执行 start-all.xml 时没有错误。

但是当我尝试执行我的 WordCount.jar 文件时出现错误:

2/23 11:42:59 INFO localizer.ResourceLocalizationService: Created localizer for container_1550911199370_0001_02_000001
19/02/23 11:42:59 INFO localizer.ResourceLocalizationService: Localizer failed
org.apache.hadoop.util.DiskChecker$DiskErrorException: No space available in any of the local directories.
        at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:399)
        at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:151)
        at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:132)
        at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:116)
        at org.apache.hadoop.yarn.server.nodemanager.LocalDirsHandlerService.getLocalPathForWrite(LocalDirsHandlerService.java:545)
        at org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.ResourceLocalizationService$LocalizerRunner.run(ResourceLocalizationService.java:1142)
19/02/23 11:42:59 ERROR nodemanager.DeletionService: Exception during execution of task in DeletionService
java.lang.NullPointerException: path cannot be null
        at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
        at org.apache.hadoop.fs.FileContext.fixRelativePart(FileContext.java:281)
        at org.apache.hadoop.fs.FileContext.delete(FileContext.java:769)
        at org.apache.hadoop.yarn.server.nodemanager.DeletionService$FileDeletionTask.run(DeletionService.java:273)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
19/02/23 11:42:59 INFO container.ContainerImpl: Container container_1550911199370_0001_02_000001 transitioned from LOCAL

我确定我有足够的空间来处理作业。我的系统是全新安装的:

配置信息:

这是我的配置文件:

核心站点.xml

<configuration>
   <property>
       <name>fs.defaultFS</name>
       <value>hdfs://localhost:9000</value>
   </property>
</configuration>

hdfs-site.xml

<configuration>
   <property>
       <name>dfs.replication</name>
       <value>1</value>
   </property>
   <property>
       <name>dfs.namenode.name.dir</name>
       <value>file:///C:/hadoop-2.8.0/data/namenode</value>
   </property>
   <property>
       <name>dfs.datanode.data.dir</name>
       <value>file:///C:/hadoop-2.8.0/data/datanode</value>
   </property>
</configuration>

mapred-site.xml

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

yarn-site.xml

<configuration>
   <property>
        <name>yarn.nodemanager.aux-services</name>
        <value>mapreduce_shuffle</value>
   </property>
   <property>
        <name>yarn.nodemanager.auxservices.mapreduce.shuffle.class</name>  
    <value>org.apache.hadoop.mapred.ShuffleHandler</value>
   </property>
   <property>
   <name>yarn.nodemanager.disk-health-checker.enable</name>
   <value>false</value>
</property>
</configuration>

这是我执行 jar 的方式(准备输入/输出目录):

hadoop fs -mkdir /top
hadoop fs -mkdir /top/input
hadoop fs -mkdir /top/output
hadoop -put C:/hadoop-2.8.0/wordcount2.txt /top/input
hadoop jar C:/hadoop-2.8.0/WordCount.jar /top/input/wordcount2.txt /top/output/output.txt

Answer 1

尝试格式化您的名称节点和数据节点。