[HDDS-6775] Add more performance logs to DataNode disk/container operations

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Ozone Datanode
• Labels: pull-request-available
• Assignee: Wei-Chiu Chuang
• Reporter: Wei-Chiu Chuang
• Created: 19/May/22 23:22
• Updated: 09/May/23 00:15

Description

Today Ozone DN do not log any warning messages at all for slow operations, which makes troubleshooting performance issues very difficult.

On the other hand, HDFS has these warning messages when operations exceed a threshold amount of time.

2022-04-23 15:19:00,445 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Slow flushOrSync took 3085ms (threshold=300ms), isSync:true, flushTotalNanos=10420ns, volume=file:/data/3/dfs/dn/, blockId=1073745940

These warnings provides a quick peek at performance problems and should be added to Ozone DN as well.

Issue Links

• links to: GitHub Pull Request #3637