thanks ! i actually turned off the power of the machine, waited 15 min, and turn it back again, everything got back to it's place, I just needed to do restart everything i guess...
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hello all, I have been set a 40 namenode cluster with Ubuntu 14.04. after using the upgrade wizard when i log in to my Cloudera Manager i see nothing but the menu. attached picture: https://ibb.co/nR488v please help me! Roy.
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