Error: -copyFromLocal: java.net.UnknownHostException

Question

I am new at Java, Hadoop etc. I am having a problem when trying to copy a file to HDFS. It says: "-copyFromLocal: java.net.UnknownHostException: quickstart.cloudera (...)"

How can I solve this? It is a exercise. You can see the problem in the imagem below.

Image with the problem

Image 2 with the error

Thank you very much.

abhiieor · Accepted Answer · 2016-08-05 18:53:55Z

1

As error says you need to supply the HDFS folder path as destination. So the code should be like:

hadoop fs -copyFromLocal words.txt /HDFS/Folder/Path

Almost all errors that you get while working in Hadoop are Java errors as MapReduce was mostly written in Java. But that doesnt mean there is some Java error in it.

answered Aug 5, 2016 at 18:53

abhiieor

3,6444 gold badges34 silver badges49 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Gus LR Over a year ago

Hi @abhiieor, thank you for your answer. I tried the code but still says the same error. Is there any other option? Thanks!

Gus LR Over a year ago

You can see "Image 2 with the erro" in the question. Thanks!

abhiieor Over a year ago

I didn't mean literal /HDFS/Folder/Path but rather actual HDFS folder. If you don't have any then run hadoop fs -mkdir /user/Gus/words to create a new folder.

Collectives™ on Stack Overflow

Error: -copyFromLocal: java.net.UnknownHostException

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related