我跟随这个视频教程试图在我的机器上设置hadoop。
如何在windows10上安装hadoop
我已经成功地安装了它:从sbin目录执行start-all.xml时没有错误。
但当我试图执行我的命令时 WordCount.jar
文件出现错误:
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$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
19/02/23 11:42:59 INFO container.ContainerImpl: Container container_1550911199370_0001_02_000001 transitioned from LOCAL
我确信我有足够的空间来处理这项工作。我的系统是新安装的:
配置信息:
这是我的配置文件:
core-site.xml文件
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration>
hdfs-site.xml文件
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///C:/hadoop-2.8.0/data/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:///C:/hadoop-2.8.0/data/datanode</value>
</property>
</configuration>
mapred-site.xml文件
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
yarn-site.xml文件
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.nodemanager.auxservices.mapreduce.shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
<property>
<name>yarn.nodemanager.disk-health-checker.enable</name>
<value>false</value>
</property>
</configuration>
下面是我如何执行jar(准备输入/输出目录):
hadoop fs -mkdir /top
hadoop fs -mkdir /top/input
hadoop fs -mkdir /top/output
hadoop -put C:/hadoop-2.8.0/wordcount2.txt /top/input
hadoop jar C:/hadoop-2.8.0/WordCount.jar /top/input/wordcount2.txt /top/output/output.txt
2条答案
按热度按时间isr3a4wc1#
尝试格式化名称节点和数据节点。
ryevplcw2#
主要错误是:
org.apache.hadoop.util.diskchecker$diskerrorexception:任何本地目录中都没有可用空间。
为了解决此问题,您可以尝试:
(1) 更改hdfs-site.xml中的目录格式
在hdfs-site.xml文件中,尝试替换以下值:
与
(2) 目录读写权限
检查当前用户是否有读写hadoop目录的权限。
(3) 节点管理器目录
尝试将以下属性添加到
yarn-site.xml
文件:更改目录后,请尝试格式化namenode。
如果仍然不起作用,您可以参考下面的逐步指南在windows上安装hadoop,它对我来说很好:
在windows10上逐步安装hadoop2.8.0
如何在windows10上运行hadoop wordcount mapreduce示例