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我以假分布模式在Windows计算机上安装了Hadoop,并尝试运行MapReduce就业。该NameNode和Datanode的运行没有任何问题,但是,在MapReduce工作保持与错误而失败:Hadoop - Mkdirs无法创建C: Users acer AppData Local Temp hadoop-unjar778 7707269774970262 META-INF license
Exception in thread "main" java.io.IOException: Mkdirs failed to create C:\Users\acer\AppData\Local\Temp\hadoop-unjar778
7707269774970262\META-INF\license
at org.apache.hadoop.util.RunJar.ensureDirectory(RunJar.java:128)
at org.apache.hadoop.util.RunJar.unJar(RunJar.java:104)
at org.apache.hadoop.util.RunJar.unJar(RunJar.java:81)
at org.apache.hadoop.util.RunJar.run(RunJar.java:209)
我检查了,我已经有充分的权限,该文件夹,我使用maven-shade-也试过插件没有成功。