Crossposting from: Stack Overflow (I will respond and give updates on both places) I would like to know if there is also maximum number for items below: Maximum number of databases in a catalog (I assume Hive Metastore only has one catalog, which is "hive") Maximum number of tables per database (as in, can I create 10 million tables in a database or due to limitation must I split them into 10 databases each with 1 million tables) I also would like to know whether the limitations are hard limit (unconfigurable), or configurable by Hive, or dependent on RDBMS it is using. ... View more