I'm using CDH 6.2.0. and I found the version of Hive is 2.1.1. 
 
What I want is to upgrade Hive to 3.0 and keep all the Hive data (keep the metastore is enough?), but I can't find any document for upgrading hive in CDH?
 
Is there any document or tutorial for that? Thanks a lot.
 
Kind regards.