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How to fix "Error: Could not find or load main class ”-Djava.library.path=.usr.local.hadoop.lib” while installing h


By : Ajeet Singh
Date : October 17 2020, 06:10 AM
may help you . I am trying to install Hadoop 2.9.2 on Ubuntu. , check your ~/.bashrc
if you add line
code :


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Hadoop on Mesos fails with "Could not find or load main class org.apache.hadoop.mapred.MesosExecutor"


By : Shakshi Garg
Date : March 29 2020, 07:55 AM
I wish this helpful for you I found the problem. bin/hadoop of the downloaded Hadoop distribution attempts to find its location by running which $0. However, that will find a current Hadoop installation if one exists (i.e. /usr/lib/hadoop), and will load the jars under that installation's lib directory instead of the downloaded one's lib directory.
I had to modify bin/hadoop of the downloaded distribution to find its own location with dirname $0 instead of which $0.

Hadoop Error: Could not find or load main class class path TestJava


By : Ahmed Moataz
Date : March 29 2020, 07:55 AM
wish of those help You are assuming hadoop command to be equivalent to java command which is not the case. Basically you run Mapred with Hadoop command where you write Mapper, Reducer(optional), Driver code and then you create a jar file will all these files and issue command like:
code :
hadoop jar myjar.jar DriverClass inputInHdfs OutputPathInHdfs

Intelij idea error "Could not find or load main class" when trying to add "-Djava.library.path" as v


By : Norman Obondo
Date : March 29 2020, 07:55 AM
this will help You have a space in your directory name ("Java Projects"). Try enclosing the value of the system property in quotation marks:
code :
-Djava.library.path="D:\Install\Java Projects\Arduino\mfz-rxtx-2.2-20081207-win-x64"

Error: Could not find or load main class .library.path=


By : Maria Lucia Muniz
Date : March 29 2020, 07:55 AM
Any of those help We found that PowerShell misinterprets the -Djava.library.path parameter. Enclosing either the parameter name or the entire name & value fixed the issue in our case.
java -D"java.library.path"=./DynamoDBLocal_lib -jar DynamoDBLocal.jar -sharedDb

What does "Error: Could not find or load main class org.apache.hadoop.util.RunJar"?


By : mohamed ezzat
Date : March 29 2020, 07:55 AM
I hope this helps . [Edited] Okay, i was reading too fast, you mentioned you were not able to run hadoop fs commands as well. I guess you might miss a few congifurations or haven't start the services at all. Try following this tutorial step by step.
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