Hadoop on MAC pseudo node : nodename nor servname provided, or not known echo "127.0.0.1 $HOSTNAME" ...

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Hadoop on MAC pseudo node : nodename nor servname provided, or not known

echo "127.0.0.1 $HOSTNAME" | sudo tee -a /etc/hosts

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I am a Hadoop newbie. I installed Hadoop on my MAC using this link It worked like a charm for me to begin with, but now I hit this problem when I run the same WordCount problem from Eclipse : ERROR

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