Aron Hamvas created HIVE-22578: ---------------------------------- Summary: CBO genOPTree is not failsafe for CTAS and VIEW statements Key: HIVE-22578 URL: https://issues.apache.org/jira/browse/HIVE-22578 Project: Hive Issue Type: Bug Components: CBO Affects Versions: 3.1.2 Reporter: Aron Hamvas Assignee: Aron Hamvas
If CBO fails during OT generation, it is supposed to skip CBO and fall back to SemanticAnalyzer generating the OT for the original AST. However, for CTAS and VIEW statements, the original AST is discarded and replaced with the new AST. If OT generation for the new AST fails with a SemanticException, the compilation is destined to fail completely since we cannot fall back to the original and possibly valid AST. Also, the SemanticException sometimes gets hidden and misjudged as a missing column statistics issue due to bad error handling. -- This message was sent by Atlassian Jira (v8.3.4#803005)