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https://issues.apache.org/jira/browse/SOLR-13163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cassandra Targett resolved SOLR-13163.
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Resolution: Won't Fix
The autoscaling framework has been removed from Solr so this can be resolved as
Won't Fix.
> 'searchRate' trigger: belowNodeOp=DELETENODE can result in loss of leader
> -------------------------------------------------------------------------
>
> Key: SOLR-13163
> URL: https://issues.apache.org/jira/browse/SOLR-13163
> Project: Solr
> Issue Type: Bug
> Reporter: Chris M. Hostetter
> Priority: Major
>
> While working on SOLR-13140 I discovered that configuring a very high
> belowNodeRate in {{SearchRateTriggerIntegrationTest.testDeleteNode}} can
> cause all nodes -- even the node hosting the shard leader -- to be the target
> of DELETENODE ops.
> this indicates at least one serious bug in the code (we should never allow
> the leader to be deleted), but also raises other questions about situations
> not adequately tested:
> * even if the code isn't particularly protecting the leader, why isn't
> minReplicas protecting at least one replica?
> * what would happen if multiple replicas co-existed on the same node? would
> if the leader was one of the replicas that existed on the same node as
> another replica?
> * what would happen if there were additional collections in the cluster that
> had replicas on these nodes that had low search rate for this target
> collection? would they protect the nodes from being the target of DELETENODE
> ops.
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