[IMPALA-7112] Change from tree-execution to a dag-execution model

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Impala 3.0, Impala 2.12.0
• Component/s: Backend, Frontend
• Labels: DAGScheduler scheduler
• Epic Color: ghx-label-4
• Assignee: Unassigned
• Reporter: Ruslan Dautkhanov
• Created: 01/Jun/18 20:36
• Updated: 22/Dec/20 21:10

Description

Quoting alex.behm from IMPALA-110 comment :

• The feature requires fundamental architectural changes from a tree-execution to a dag-execution model.

Issue Links

• blocks: IMPALA-7114 MATERIALIZE a subquery hint