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https://issues.apache.org/jira/browse/HDDS-17706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HDDS-17706:
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Labels: pull-request-available (was: )
> Datanode usageinfo retries queries for unknown UUIDs
> ----------------------------------------------------
>
> Key: HDDS-17706
> URL: https://issues.apache.org/jira/browse/HDDS-17706
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Shuo Huang
> Assignee: Shuo Huang
> Priority: Minor
> Labels: pull-request-available
>
> Querying usage information with a valid UUID that is not registered in SCM
> throws a NullPointerException:
> {code:bash}
> ozone admin datanode usageinfo --node-id <UUID>
> {code}
> {noformat}
> Cannot invoke "org.apache.hadoop.hdds.protocol.DatanodeDetails.getID()"
> because "datanodeDetails" is null
> {noformat}
> SCM's getNode() returns null, which is passed to getUsageInfo() without a
> null check. The client then retries the failed request until its retry limit
> is reached.
> Reproduced locally with the retry limit set to 2. SCM received the same query
> 3 times.
> The default configuration allows 300 retries at 2-second intervals.
> The command should report that the datanode was not found without retrying.
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