I am also facing the same issue is there any solution for it, or we can ignore this exception.
I have upgraded a database MariaDB from 5.6 to 10.2 and Ambari 2.6.2.2 to 2.7.3.
Getting an error while running the hive pre-upgrade check.
2019-07-04 03:07:47,604 ERROR [main] acid.PreUpgradeTool (PreUpgradeTool.java:main(153)) - PreUpgradeTool failed
java.lang.IllegalStateException: preUpgrade requires Hive 2.x. Actual: 1.2.1000
at org.apache.hadoop.hive.upgrade.acid.PreUpgradeTool.main(PreUpgradeTool.java:148)