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https://issues.apache.org/jira/browse/HDDS-8369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krishna Kumar Asawa reassigned HDDS-8369:
-----------------------------------------
Assignee: Ashish Kumar
> Decommissioning with rack aware placement policy does not replicate to
> correct rack
> -----------------------------------------------------------------------------------
>
> Key: HDDS-8369
> URL: https://issues.apache.org/jira/browse/HDDS-8369
> Project: Apache Ozone
> Issue Type: Bug
> Components: SCM
> Reporter: Varsha Ravi
> Assignee: Ashish Kumar
> Priority: Major
>
> When the rack aware placement policy is set, and the replicas are present in
> 3 DNs across 2 racks, when one of the DNs which is present in same rack as
> another is decommissioned, then the re-replication does not happen as per
> rack aware placement.
> *DNs of replica:* 1,3,5
> *Racks:*
> ||Datanode||Rack Name||
> |DN1|/rack1|
> |DN3|/rack1|
> |DN9|/rack1|
> |DN5|/rack2|
> |DN8|/rack2|
> |DN7|/rack2|
> |DN2|/rack3|
> |DN4|/rack4|
> |DN6|/rack5|
> *DN decommissioned:* DN3
> New Replica is present in DN2 which is in /rack3
> So decommissioning the node, the new racks are /rack1,/rack2, /rack3 which is
> not present in rack-aware fashion. If rack aware placement is followed then
> the new replica should have gone into either of DN9, DN8 or DN7.
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