問題：

1、

Java installed version: 1.8.0_231 Hadoop installed version: Hadoop 3.2.1

But after running commandhdfs namenode -formatI'm getting following error

Re-format filesystem in Storage Directory root= C:\hadoop-3.2.1\data\namenode; location= null ? (Y or N) y
2019-10-19 12:34:58,809 INFO namenode.FSImage: Allocated new BlockPoolId: BP-1445655329-172.18.148.177-1571468698797
2019-10-19 12:34:58,809 INFO common.Storage: Will remove files: []
2019-10-19 12:34:58,812 ERROR namenode.NameNode: Failed to start namenode.java.lang.UnsupportedOperationException
    at java.nio.file.Files.setPosixFilePermissions(Files.java:2044)
    at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.clearDirectory(Storage.java:452)
    at org.apache.hadoop.hdfs.server.namenode.NNStorage.format(NNStorage.java:591)
    at org.apache.hadoop.hdfs.server.namenode.NNStorage.format(NNStorage.java:613)
    at org.apache.hadoop.hdfs.server.namenode.FSImage.format(FSImage.java:188)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1206)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1649)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1759)
2019-10-19 12:34:58,819 INFO util.ExitUtil: Exiting with status 1: java.lang.UnsupportedOperationException
2019-10-19 12:34:58,823 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at CWT-DST-0051/***.**.***.***
 


解決辦法：
https://kontext.tech/column/hadoop/379/fix-for-hadoop-321-namenode-format-issue-on-windows-10

Root cause
Refer to the following official issue tracker about the details of the root cause:

HDFS-14890

This issue will only be fixed on Hadoop 3.3.0 or 3.2.0 releases.

If you want to install 3.2.1, follow instructions below.

Resolution
I
 
've provided detailed steps about installing Hadoop 3.2.1 on Windows 10  in the following article with fix about this issue:

Latest Hadoop 3.2.1 Installation on Windows 10 Step by Step Guide

Fix the issue only
I've uploaded the updated JAR file into the following location. Please download it from the following link:
 


https://github.com/FahaoTang/big-data/blob/master/hadoop-hdfs-3.2.1.jar  

And then rename the file namehadoop-hdfs-3.2.1.jartohadoop-hdfs-3.2.1.bkin folder%HADOOP_HOME%\share\hadoop\hdfs.

Copy the downloadedhadoop-hdfs-3.2.1.jarto folder%HADOOP_HOME%\share\hadoop\hdfs.

Refer to this article for more details about how to build a native Windows Hadoop:Compile and Build Hadoop 3.2.1 on Windows 10 Guide.

If you have any other questions, feel free to add a comment.