I have been solved the problem.
Just share the solution to everyone here.
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I have two clusters (prod and dev) all have the same problem
env:
Centos6.6 minamal
jdk1.7
CDH&CM 5.4.3
It's shown
Potential misconfiguration detected. Fix and restart Hue.
Hive Editor The application won't work without a running HiveServer2.
![HUE1.png HUE1.png](https://community.cloudera.com/t5/image/serverpage/image-id/1084i70F895C7C256C619/image-size/large?v=v2&px=999)
the database list could not be shown(always loading...)
I executed a simple sql and got an error "Could not start SASL: Error in sasl_client_start......."
![HUE2.png HUE2.png](https://community.cloudera.com/t5/image/serverpage/image-id/1085iD1D0D321FE51D4B7/image-size/large?v=v2&px=999)
I got some helpful tips in this link:
https://groups.google.com/a/cloudera.org/forum/#!topic/hue-user/TVon3U2uSis
the prombem is some cyrus system libs not installed.
then i executed "yum –y install cyrus-sasl-plain cyrus-sasl-gssapi"
the problem solved