[IMPALA-3265] Create a metrics to track spilling per operator

• Type: Task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.2.4
• Fix Version/s: Impala 2.10.0
• Component/s: Backend
• Assignee: Mostafa Mokhtar
• Reporter: Alan Choi
• Created: 30/Mar/16 01:02
• Updated: 05/Aug/17 03:21
• Resolved: 05/Aug/17 03:21

Description

There's no per operator metrics that tracks spilling. Need the following metrics (per operator):

1. Bytes spilled
2. Time taken to read/write the spilled data

Issue Links

• is blocked by: IMPALA-3200 Replace BufferedBlockMgr with new buffer pool
• is duplicated by: IMPALA-2795 Report spilling time per operator