[DRILL-6232] Vector initializer used for memory allocation in external sort is subject to aliasing

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 1.13.0
• Component/s: Execution - Flow
• Assignee: Padma Penumarthy
• Reporter: Padma Penumarthy
• Created: 12/Mar/18 04:49
• Updated: 15/Jun/18 22:54

Description

vector initializer class builds hints for individual columns and saves them in a map with lookup key of column name. For children of map columns, this name will be parent name + "." + child column name. This can cause problem when we have dots in column names i.e. a.b(c) and a(b.c) will have the same key and can cause overwrites of each other values. Change this to use allocation routines in column size which do not have this problem. 

Issue Links

• Dependent: DRILL-6238 Batch sizing for operators