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https://issues.apache.org/jira/browse/SOLR-8069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14903807#comment-14903807
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Mark Miller commented on SOLR-8069:
-----------------------------------

The defensive checks are just sugar like I said. If we are going to check zk if 
we are still leader it makes sense to check our local reckoning first. 

The meat of the change is the parent version check. If it fails, we don't care. 
The leader has moved on - we don't care about retries. 

> Ensure that only the valid ZooKeeper registered leader can put a replica into 
> Leader Initiated Recovery.
> --------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-8069
>                 URL: https://issues.apache.org/jira/browse/SOLR-8069
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Mark Miller
>            Assignee: Mark Miller
>            Priority: Critical
>         Attachments: SOLR-8069.patch, SOLR-8069.patch
>
>
> I've seen this twice now. Need to work on a test.
> When some issues hit all the replicas at once, you can end up in a situation 
> where the rightful leader was put or put itself into LIR. Even on restart, 
> this rightful leader won't take leadership and you have to manually clear the 
> LIR nodes.
> It seems that if all the replicas participate in election on startup, LIR 
> should just be cleared.



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