Exception in thread “main” java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z

Question

trying to run MR program version(2.7) in windows 7 64 bit in eclipse while running the above exception occurring . I verified that using 64 bit 1.8 java version and observ

Answer 1

I already had %HADOOP_HOME%/bin in my PATH and my code had previously run without errors. Restarting my machine made it work again.

Answer 2

After putting haddop.dll and winutils in hadoop/bin folder and adding the folder of hadoop to PATH, we also need to put hadoop.dll into the C:\Windows\System32 folder

Answer 3

Yes this issues arose when I was using the PIGUNITS for automation of PIGSCRIPTS. Two things in sequence need to be done:

1. Copy both the files as mentioned about in a location and add it to the environment variables under PATH.

2. To reflect the change what you have just done, you have to restart your machine to load the file.

Under JUNIT I was getting this error which would help others as well:

org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias XXXXX. Backend error : java.lang.IllegalStateException: Job in state DEFINE instead of RUNNING at org.apache.pig.PigServer.openIterator(PigServer.java:925)

Answer 4

This issue occurred to me and the cause was I forgot to append %HADOOP_HOME%/bin to PATH in my environment variables.

Answer 5

In addition to other solutions, Please download winutil.exe and hadoop.dll and add to $HADOOP_HOME/bin. It works for me.

https://github.com/steveloughran/winutils/tree/master/hadoop-2.7.1/bin

Note: I'm using hadoop-2.7.3 version

Answer 6

The version mismacth is main cause for this issue. Follow complete hadoop version with java library will solve the issue and if you still face issue and working on hadoop 3.1.x version use this library to download bin

https://github.com/s911415/apache-hadoop-3.1.0-winutils/tree/master/bin