[HIVE-4606] Implement vector group by hash spill

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: vectorization-branch
• Fix Version/s: vectorization-branch, 0.13.0
• Component/s: Query Processor
• Assignee: Remus Rusanu
• Reporter: Remus Rusanu
• Created: 24/May/13 08:45
• Updated: 23/Oct/13 21:59
• Resolved: 11/Jun/13 21:41

Description

the row mode GBy operator is capable of spilling the hash map (by emitting it into the M/R and deleting the keys emitted) to conform to emmory constraints. The VGBy should be able to do the same.