[HIVE-11397] Parse Hive OR clauses as they are written into the AST

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0, 2.0.0
• Fix Version/s: 1.3.0, 2.0.0
• Component/s: Logical Optimizer
• Assignee: Jesús Camacho Rodríguez Assign to me
• Reporter: Gopal Vijayaraghavan
• Created: 29/Jul/15 02:39
• Updated: 27/Feb/24 22:24
• Resolved: 10/Aug/15 06:52

Description

When parsing A OR B OR C, hive converts it into

(C OR B) OR A

instead of turning it into

A OR (B OR C)

        GenericUDFOPOr or = new GenericUDFOPOr();
        List<ExprNodeDesc> expressions = new ArrayList<ExprNodeDesc>(2);
        expressions.add(previous);
        expressions.add(current);

Issue Links

• is part of: HIVE-11315 Compilation performance issues for large queries