While trying to used the hue Web Ui I've had the same problem. I my case the problem was that the impala service was not running.   I was trying to do a hive query but impala was set as the default application. So as soon as I connect to Hue Web Ui it tries to connect to the Impala server and throws the error message. Therefore any query you run gets executed by impala and throws the error. To solve this, you must check that impala service is running properly.   ... View more

Hi @gredondo ,   Glad to hear you were able to find the right password and salt. That was included in the article I posted earlier.   I am not quite sure what happened to cause your issue, but I think a good way to resolve the issue next time is: make a good backup of your CM database so you have a "working" username and password in the db.   Thanks and please mark this thread as resolved when you get a chance. Li ... View more

Worked for 6.3.1 (The "9f7e3270b1aaa4931d38845a0334e66b2dd93f916439006fac4e5e2535a444b3", -5357030608435271136)   The other combination "ffa2eb4251b38e069e968890cb2bcdb6229982322f5ed2470bf96231fe4c39c8", -4382599614486590865 DID NOT work in 6.3.1.   ... View more