[HBASE-3869] RegionServer metrics - add read and write byte-transfer statistics

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Component/s: metrics
• Assignee: Unassigned
• Reporter: Doug Meil
• Created: 09/May/11 17:40
• Updated: 12/Jun/22 18:48
• Resolved: 12/Jun/22 18:48

Description

It would be beneficial to have the "data transfer weight" of reads and writes per region server.

HBASE-3647 split out the read/write metric requests from the uber-"request" metric - which is great.

But there isn't a notion of "data transfer weight" and this is why it's important: the read metrics are effectively RPC-based. Thus, with a scan caching of 500, there is 1 RPC call every 500 rows read (and 1 'read' metric increment). And this metric doesn't indicate how much data is being transferred (e.g., a read with 50 attributes will probably cost a lot more than a read with 5 attributes).

Issue Links

• is related to: HBASE-12911 Client-side metrics