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https://issues.apache.org/jira/browse/HDDS-15138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aryan Gupta updated HDDS-15138:
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Summary: Add EC DN safemode rule and control RATIS/THREE background
pipelines for EC-default clusters (was: SCM safemode pipeline rules should
honor default EC replication config)
> Add EC DN safemode rule and control RATIS/THREE background pipelines for
> EC-default clusters
> --------------------------------------------------------------------------------------------
>
> Key: HDDS-15138
> URL: https://issues.apache.org/jira/browse/HDDS-15138
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Aryan Gupta
> Assignee: Aryan Gupta
> Priority: Major
> Labels: pull-request-available
>
> This patch switches SCM safemode handling to the new EC approach.
> When default replication is EC, SCM now uses a dedicated
> {{ECMinDataNodeSafeModeRule}} to check if enough healthy DataNodes are
> available ({{{}data + parity{}}}) before safemode exit.
> A new config flag controls whether {{BackgroundPipelineCreator}} should
> create {{RATIS/THREE}} pipelines in EC-default clusters:
> * {{ozone.scm.pipeline.creation.ec.ratis.three.enabled=true}} -> create
> RATIS/THREE pipelines in background
> * {{false}} -> do not create background pipelines for EC-default
> For RATIS-default clusters, behavior stays the same as before.
> Tests were updated to match this behavior:
> * added tests for the new EC DN safemode rule
> * added tests for EC-default + flag true/false behavior
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