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https://issues.apache.org/jira/browse/HDDS-2238?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai updated HDDS-2238:
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Status: Patch Available (was: Open)
> Container Data Scrubber spams log in empty cluster
> --------------------------------------------------
>
> Key: HDDS-2238
> URL: https://issues.apache.org/jira/browse/HDDS-2238
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Components: Ozone Datanode
> Affects Versions: 0.5.0
> Reporter: Attila Doroszlai
> Assignee: Attila Doroszlai
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> In an empty cluster (without closed containers) logs are filled with messages
> from completed data scrubber iterations (~3600 per second for me), if
> Container Scanner is enabled ({{hdds.containerscrub.enabled=true}}), eg.:
> {noformat}
> datanode_1 | 2019-10-03 15:43:57 INFO ContainerDataScanner:114 - Completed
> an iteration of container data scrubber in 0 minutes. Number of iterations
> (since the data-node restart) : 6763, Number of containers scanned in this
> iteration : 0, Number of unhealthy containers found in this iteration : 0
> {noformat}
> Also CPU usage is quite high.
> I think:
> # there should be a small sleep between iterations
> # it should log only if any containers were scanned
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