[IMPALA-4837] Nested loop join should operate within a memory constraint

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: Impala 2.9.0
• Component/s: Backend
• Labels: resource-management
• Epic Link: Operator memory constraints
• Target Version: Product Backlog
• Assignee: Unassigned
• Reporter: Tim Armstrong
• Created: 27/Jan/17 22:58
• Updated: 28/Jul/17 15:32

Description

We should modify NestedLoopJoin so that it allocates memory from BufferPool. We should also consider implementing spill-to-disk for NestedLoopJoin so that it operates within a memory constraint.