[IMPALA-394] add memory usage tracking

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 1.0
• Fix Version/s: Impala 1.1
• Assignee: Alan Choi
• Reporter: Greg Rahn
• Created: 04/Jun/13 21:45
• Updated: 13/Jun/13 23:24
• Resolved: 13/Jun/13 23:24

Description

The mem_limit flag lets one control the high water mark for memory allocation, but it would be very useful to track (on each node, and ultimately globally) per query and per impalad usage of memory. This could be exposed in the execution profile log as well as the debug web pages.