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https://issues.apache.org/jira/browse/PHOENIX-7845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tanuj Khurana resolved PHOENIX-7845.
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Resolution: Fixed
> ReplicationLogGroup initialization resilience to standby cluster
> unavailability
> -------------------------------------------------------------------------------
>
> Key: PHOENIX-7845
> URL: https://issues.apache.org/jira/browse/PHOENIX-7845
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Tanuj Khurana
> Assignee: Tanuj Khurana
> Priority: Major
>
> When a RegionServer starts and the HAGroupStore indicates SYNC mode, but the
> standby namenode is unavailable, ReplicationLogGroup.init() fails
> completely at {_}createPeerShardManager(){_}. The existing runtime fallback
> logic which gracefully transitions SYNC → STORE_AND_FORWARD on failure — is
> never reached because it lives downstream of the peer shard manager creation.
> The fix removes eager peer shard manager creation from init() and instead
> creates it on demand with a per-mode-session lifetime. This allows the
> existing updateModeOnFailure() path to handle degradation naturally.
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