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cluster installation - can't proceed during master selection

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cluster installation - can't proceed during master selection

Hey there,

I'm trying to install a new Hadoop cluster with Ambari 2.7. During the master selection of the services I get following error in the web interface:

0 status code received on POST method for API: /api/v1/stacks/HDP/versions/3.0/recommendations

After that the next button grays out and I can't continue. I tried looking in the ambari-server log, but there gets nothing logged during this error.

I would appreciate any help.

Best regards,

Markus

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