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https://issues.apache.org/jira/browse/HDDS-9083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17767646#comment-17767646
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Ritesh Shukla commented on HDDS-9083:
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[~duongnguyen]can this be closed?
> Possible deadlock between SCM & Datanodes regarding secret keys initializing
> ----------------------------------------------------------------------------
>
> Key: HDDS-9083
> URL: https://issues.apache.org/jira/browse/HDDS-9083
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Duong
> Assignee: Duong
> Priority: Major
>
> In an existing cluster, for the first time upgrading to an Ozone version that
> uses symmetric secret keys (HDDS-7733), SCM and Datanodes seems to fall in a
> cyclic dependency during initialization.
> # SCM needs to receive (healthy) heartbeats from its known datanodes to
> escape safe mode. For now, SCM only initializes secret keys on an SCM leader
> ready, and it looks like that doesn't happen until SCM escapes safe mode.
> # During startup, Datanodes need to get the current active secret keys. For
> now, this call (with a long chain of retries) is made before datanodes
> schedule heartbeat reporting.
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