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https://issues.apache.org/jira/browse/HDDS-16497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Andika updated HDDS-16497:
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Summary: Support passing OM ThreadLocal context for Ratis read (was:
Support passing ThreadLocal context to Ratis during query)
> Support passing OM ThreadLocal context for Ratis read
> -----------------------------------------------------
>
> Key: HDDS-16497
> URL: https://issues.apache.org/jira/browse/HDDS-16497
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Ivan Andika
> Assignee: Ivan Andika
> Priority: Critical
>
> While working on HDDS-15089, encountered an NPE issue that was caused by null
> Server.getRemoteUser() in OzoneManager#getS3VolumeContext. This reason is
> that Ratis would call StateMachine#query in a separate thread (under
> RaftServerImpl#clientExecutor). Therefore, the ThreadLocal in OzoneManager
> and the CurrCall which is used by Server.getRemoteUser() is not going to be
> propagated.
> This affects most read requests submitted to Ratis (executed in
> OzoneManagerStateMachine#query) that require using ThreadLocal one way or
> another.
>
> We need a way to propagate the Server#getCurrcall ThreadLocal context to the
> StateMachine#query.
>
> *Note this suggests that follower read feature is not production ready until
> this is resolved.*
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