Wei-Chiu Chuang created HDDS-6775:
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Summary: Add more performance logs to DataNode disk/container
operations
Key: HDDS-6775
URL: https://issues.apache.org/jira/browse/HDDS-6775
Project: Apache Ozone
Issue Type: Improvement
Components: Ozone Datanode
Reporter: Wei-Chiu Chuang
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.
{noformat}
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{noformat}
These warnings provides a quick peek at performance problems and should be
added to Ozone DN as well.
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