I'm trying to understand a little more about what these options do behind the scenes when pressed? I found this post, but it never got any responses (http://community.cloudera.com/t5/Web-UI-Hue-Beeswax/What-is-under-the-hood-of-Hue-Impala-editor-Clea...)
This is the one I am not too sure what happens
Perform Incremental metadata Update
I assume this issues a refresh command for all tables within the current database which is been viewed? If no database is veiwed does it do it for everything?
Invalidate All metadata and rebuild index
Same as above, but rather than refresh it invalidates full metadata? If no database is veiwed does it do it for everything?
Thanks for the explanation. In extension to the topic, I need small clarification - we recently implemented sentry on impala, based on below KB  article, we can't execute "Invalidate all metadata and rebuild index" and "Perform incremental metadata update" , since we don't have access to all the DB's, it's fair as well. Now my question is -
1. I am not able to see new DB in Hue impala, I can see the same from beeline or impala shell. How to fix or solve this ?
2. I can execute invalidate metadata on table from impala shell but I have 50+ DB's and 10's of tables in each db. Is there any option to run invalidate metadata ion DB level instead of individual table?