[KYLIN-1233] Spill to disk when AggregationCache need too many memory

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v1.4.0
• Component/s: Query Engine
• Assignee: Dong Li
• Reporter: Dong Li
• Created: 15/Dec/15 08:49
• Updated: 09/Aug/17 05:41
• Resolved: 30/Dec/15 07:20

Description

In class GTAggregateScanner.AggregationCache, we hard coded 10GB as max limit of AggregationCache. If exceeded, exception will be thrown.

We can leverage disk to ensure stable.

Issue Links

• is depended upon by: KYLIN-972 Stabilize 1.4-rc branch to be production ready