HADOOP_HOME and hadoop.home.dir are unset

[yiyungent]

[nio-8080-exec-8] org.apache.hadoop.util.Shell             : Did not find winutils.exe: {}

java.io.FileNotFoundException: java.io.FileNotFoundException: HADOOP_HOME and hadoop.home.dir are unset. -see https://wiki.apache.org/hadoop/WindowsProblems
	at org.apache.hadoop.util.Shell.fileNotFoundException(Shell.java:534) ~[hadoop-common-2.9.2.jar:na]

peration has occurred
WARNING: Illegal reflective access by org.apache.hadoop.security.authentication.util.KerberosUtil (file:/D:/maven-repository/org/apache/hadoop/hadoop-auth/2.9.2/hadoop-auth-2.9.2.jar) to method sun.security.krb5.Config.getInstance()
WARNING: Please consider reporting this to the maintainers of org.apache.hadoop.security.authentication.util.KerberosUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2021-06-19 21:38:06.931  WARN 4816 --- [nio-8080-exec-8] org.apache.hadoop.util.NativeCodeLoader  : Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
log4j:WARN No appenders could be found for logger (org.apache.htrace.core.Tracer).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.