WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.hadoop.security.authentication.util.KerberosUtil (file:/Users/jokerxu/tools/hadoop-2.10.0/share/hadoop/common/lib/hadoop-auth-2.10.0.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
21/12/23 10:25:18 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
mkdir: `/wc_input': Input/output error
hadoop安装目录下的lib/native未引入至环境变量。
export JAVA_LIBRAY_PATH=/usr/local/hadoop/lib/native
然后重启