[HDDS-4363] Add metric to track the number of RocksDB open/close operations

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.1.0
• Component/s: Ozone Datanode
• Labels: pull-request-available
• Target Version/s: 1.1.0
• Assignee: Mukul Kumar Singh
• Reporter: Wei-Chiu Chuang
• Created: 21/Oct/20 18:29
• Updated: 11/Nov/20 18:01
• Resolved: 11/Nov/20 18:01

Description

We are benchmarking Ozone performance, and realized RocksDB open/close operations have huge impact to performance. Each db open takes about 70ms on average and close takes about 1ms on average.

 

Having metrics on these operations will help understand DataNode performance problems.

Issue Links

• links to: GitHub Pull Request #1530