When you run the Spark program on windows OS, you often get the exception “Exception in thread “main” java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z”
Full-stack trace of the error
Exception in thread “main” java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
Solution: In order to run the Spark program on windows, you would need Hadoop winutils.exe file as windows don’t support HDFS and winutils provides a wrapper.
If you don’t have winutils.exe installed, please download the wintils.exe and hadoop.dll files from https://github.com/steveloughran/winutils (select the Hadoop version you are using as winutils are specific to Hadoop versions)
Copy the downloaded files to a folder on your system, for example, let’s say you have copied these files to c:/hadoop/bin, set the below environment variables.
set HADOOP_HOME=c:/hadoop
set PATH=%PATH%;%HADOOP_HOME%/bin;
Close and reload the command line or terminal to initialize these variables. Sometimes you may also need to put hadoop.dll file into the C:/Windows/System32 folder.
Now run your spark program and issue “Windows.access0(Ljava/lang/String;I)Z” should disappear.
However, if it still doesn’t work, try to restart your system as some of the above settings would get the effect with the restart.
Happy Learning !!
merci beaucoup la methode fonctionne bien
Thank you.
Thank you!
copying dll file to Windows\System32 folder helped me!
Glad it worked for you. Thanks for sharing.
Thank you. It worked for me on Windows.
Thanks!! Previously I just have the winutils.exe downloaded and was still getting the error. Adding the hadoop.dll helps 🙂
This solution worked fine.
Thank you!
Does this mean hadoop needs to installed on windows? Or, as long as i have installed pyspark and the dll/exe I would be good
Technically you don’t need Hadoop to run PySpark on windows. you need winutils dll/exe files in the right path.
For me winutil.exe + hadoop.dll , Thank you
A life saver