在Windows 10中首次运行Hadoop时执行datanode时出错

Question

我正在尝试在我的Windows10机器中运行Hadoop3.1.1。我修改了所有文件：

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C:\hadoop-3.1.1\bin> hdfs namenode -format

C:\hadoop-3.1.1\sbin> start-dfs.cmd

2018-09-02 21:37:06,232 INFO ipc.Server: IPC Server Responder: starting
2018-09-02 21:37:06,232 INFO ipc.Server: IPC Server listener on 9000: starting
2018-09-02 21:37:06,247 INFO namenode.NameNode: NameNode RPC up at: localhost/127.0.0.1:9000
2018-09-02 21:37:06,247 INFO namenode.FSNamesystem: Starting services required for active state
2018-09-02 21:37:06,247 INFO namenode.FSDirectory: Initializing quota with 4 thread(s)
2018-09-02 21:37:06,247 INFO namenode.FSDirectory: Quota initialization completed in 3 milliseconds
name space=1
storage space=0
storage types=RAM_DISK=0, SSD=0, DISK=0, ARCHIVE=0, PROVIDED=0
2018-09-02 21:37:06,279 INFO blockmanagement.CacheReplicationMonitor: Starting CacheReplicationMonitor with interval 30000 milliseconds

ERROR: datanode.DataNode: Exception in secureMain
org.apache.hadoop.util.DiskChecker$DiskErrorException: Too many failed volumes - current valid volumes: 0, volumes configured: 1, volumes failed: 1, volume failures tolerated: 0
at org.apache.hadoop.hdfs.server.datanode.checker.StorageLocationChecker.check(StorageLocationChecker.java:220)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2762)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2677)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2719)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2863)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2887)
2018-09-02 21:37:04,250 INFO util.ExitUtil: Exiting with status 1: org.apache.hadoop.util.DiskChecker$DiskErrorException: Too many failed volumes - current valid volumes: 0, volumes configured: 1, volumes failed: 1, volume failures tolerated: 0
2018-09-02 21:37:04,250 INFO datanode.DataNode: SHUTDOWN_MSG:

然后，数据阳极就会关闭！我尝试了几种方法来克服这个错误，但这是我第一次在windows上安装Hadoop，不明白下一步该怎么做！

Answer 1

在我删除了hdfs-site.xml中datanode的文件系统引用之后，我的工作就正常了。我发现它使软件能够创建和初始化它自己的datanode，然后在sbin中弹出。从那以后，我就可以毫无障碍地使用hdfs了。以下是我在Windows上对Hadoop 3.1.3起作用的方法：

<configuration>

<property> 
<name>dfs.replication</name> 
<value>1</value> 
</property> 

<property> 
<name>dfs.namenode.name.dir</name> 
<value>file:///C:/Users/myusername/hadoop/hadoop-3.1.3/data/namenode</value>
</property> 

<property> 
<name>dfs.datanode.data.dir</name> 
<value>datanode</value>
</property> 

</configuration>

干杯，MV