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I've been working on a Ubuntu and Hadoop, I'm at installing and configuring stage. For this I'm following a link: Hadoop Beginner

When I am configuring the Hadoop so when I reach to

gedit core-site.xml

I do the editing and when I save it so it gives an error:

enter image description here

I searched couples of links but could not get the answer that how to overcome this problem.

Every file when I edit and save to same error shows.

1 Answer 1

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Check if some java processes are running:

# ps -A | grep java

If it's so, check if it's the NameNode or DataNode service:

# jps
16192 Jps
1 DataNode

In this case, just stop the process by ID and try to edit configuration again.

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