[IMPALA-4810] DECIMAL datatype changes for Impala 2.9

• Type: New Feature
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: Impala 2.8.0
• Fix Version/s: Impala 2.9.0
• Component/s: Backend
• Epic Link: Numeric Datatype Conversions
• Target Version: Impala 2.9.0
• Assignee: Daniel Hecht
• Reporter: Daniel Hecht
• Created: 24/Jan/17 18:39
• Updated: 13/Mar/17 18:24
• Resolved: 03/Mar/17 05:28

Description

Collection of DECIMAL related changes for Impala 2.9.0.

Sub-Tasks

• Rounding should be done instead of truncating when casting DECIMAL to DECIMAL, FLOAT/DOUBLE to DECIMAL, DECIMAL to INT: Resolved
• DECIMAL divide result type (Impala TPC-DS query 11 result lost one row): Resolved
• Add codegen GetConstant() for query options: Resolved
• Add strict mode tests for DECIMAL overflow of precision/scale in text file parsing: Resolved
• DECIMAL div/mod/multiply rounding: Resolved
• DECIMAL AVG() result type: Resolved
• DECIMAL CEIL() returns wrong result type: Resolved