eclipse 中运行 Hadoop2.7.3 map reduce程序出现错误(null) entry in command string: null chmod 0700

时间 2019-11-21

标签 eclipse 运行 hadoop2.7.3 hadoop map reduce 程序出现错误 null entry command string chmod 栏目 Eclipse 繁體版

原文原文链接

运行map reduce任务报错：java

(null) entry in command string: null chmod 0700apache

解决办法：windows

在https://download.csdn.net/download/xiaoliu123586/10551225oop

中下载winutils.exe,libwinutils.lib 拷贝到%HADOOP_HOME%\bin目录。spa

再次执行程序，报错：.net

Exception in thread "main" java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
 at org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Native Method)
 at org.apache.hadoop.io.nativeio.NativeIO$Windows.access(NativeIO.java:609)
 at org.apache.hadoop.fs.FileUtil.canRead(FileUtil.java:977)
 at org.apache.hadoop.util.DiskChecker.checkAccessByFileMethods(DiskChecker.java:187)
 at org.apache.hadoop.util.DiskChecker.checkDirAccess(DiskChecker.java:174)
 at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:108)
 at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.confChanged(LocalDirAllocator.java:285)
 at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:344)
 at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:150)

在https://download.csdn.net/download/xiaoliu123586/10551225 中下载hadoop.dll，并拷贝到c:\windows\system32目录中。code

执行map reduce程序，正常。hadoop

注意：程序中的路径都要写windows文件系统中的路径了，再也不是hdfs中的路径。get

eclipse 中运行 Hadoop2.7.3 map reduce程序 出现错误(null) entry in command string: null chmod 0700

eclipse 中运行 Hadoop2.7.3 map reduce程序出现错误(null) entry in command string: null chmod 0700