[IMPALA-3202] Add spilling support to new buffer pool

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 2.6.0
• Fix Version/s: Impala 2.9.0
• Component/s: Backend
• Labels: observability resource-management
• Target Version: Impala 2.9.0
• Assignee: Tim Armstrong
• Reporter: Tim Armstrong
• Created: 18/Mar/16 00:13
• Updated: 22/Jun/17 22:41
• Resolved: 26/Jan/17 22:33

Description

This is a subtask of IMPALA-3200 to add basic support for spilling buffers

We'll call this complete once we have the buffer pool features required to execute queries that successfully spill to disk. Given the new guaranteed reservation model, these queries should be guaranteed to successfully spill if the initial reservation is granted (excluding cases like rows larger than the default page size). We will not worry about performance or memory usage constraints at this stage.