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https://issues.apache.org/jira/browse/HDDS-6775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang reassigned HDDS-6775:
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Assignee: Wei-Chiu Chuang
> 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
> Assignee: Wei-Chiu Chuang
> Priority: Major
>
> 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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