David Mollitor created HIVE-23177: ------------------------------------- Summary: Upgrade to ANTLR4 Key: HIVE-23177 URL: https://issues.apache.org/jira/browse/HIVE-23177 Project: Hive Issue Type: Improvement Reporter: David Mollitor
Upgrade Hive to ANTL4, ANTLR3 lost support many moons ago. This is going to be a big lift. Many of the Hive rules use the "rule rewrite" feature which no longer exists in ANLTR4 and it must be completely re-implemented: https://stackoverflow.com/questions/14565794/antlr-4-tree-inject-rewrite-operator -- This message was sent by Atlassian Jira (v8.3.4#803005)