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windows 搭建hadoop 开发环境 Could not locate executable null\bin\winutils.exe in the Hadoop binaries.
"C:\Program Files\Java\jdk1.8.0_251\bin\java.exe" "-javaagent:E:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2019.3.3\lib\idea_rt.jar=61679:E:\Program Files\JetBrains\IntelliJ IDEA Communi
log4j:ERROR Could not find value for key log4j.appender.INFO
log4j:ERROR Could not find value for key log4j.appender.INFOlog4j:ERROR Could not instantiate appender named "INFO".更换log4j.properties文件即可解决问题# priority:debug<info<warn<error#you cannot speci
CentOS7查看CPU核数
1. 查看CPU型号cat /proc/cpuinfo | grep name | sort | uniq2. 查看核数和逻辑CPU数目# CPU 个数cat /proc/cpuinfo | grep "physical id" | sort | uniq | wc -l# 核数cat /proc/cpuinfo | grep "core id" | sort | uniq | wc -l# 线程
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