Key semantic changes and workarounds
As SQL Developer, Analyst, or other Hive user, you need to know potential problems with queries due to semantic changes. Some of the operations that changed were not widely used, so you might not encounter any of the problems associated with the changes.
Over the years, Apache Hive committers enhanced versions of Hive supported in legacy releases of CDH and HDP, with users in mind. Changes were designed to maintain compatibility with Hive applications. Consequently, few syntax changes occurred over the years. A number of semantic changes, described in this section did occur, however. Workarounds are described for these semantic changes.