20/07/06 13:33:12 WARN mapred.LocalJobRunner: job_local34298678_0001
java.lang.Exception: java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:406)
Caused by: 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$Windows.access(NativeIO.java:609)
at org.apache.hadoop.fs.FileUtil.canRead(FileUtil.java:980)
at org.apache.hadoop.util.DiskChecker.checkAccessByFileMethods(DiskChecker.java:187)
at org.apache.hadoop.util.DiskChecker.checkDirAccess(DiskChecker.java:174)
at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:108)
at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.confChanged(LocalDirAllocator.java:314)
at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:377)
at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:151)
at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:132)
at org.apache.hadoop.mapred.MapOutputFile.getOutputFileForWrite(MapOutputFile.java:73)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:1518)
at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1199)
at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:609)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:675)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:268)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
1、系统环境变量配置HADOOP_HOME ，并且添加进path 变量里；
2、HADOOP_HOME\bin 里是否有hadoop.dll 和 winutils.exe 这两个文件
3、C: windows\System32 里是否有hadoop.dll 文件 ;
4、记得重启电脑！！！
5、修改原码。修改报错的原码
image.png
打开NativeIO.java 修改其609行，修改如下：
image.png
