[jira] [Resolved] (SOLR-17077) When rejoining shard leader election, we try to leave the election twice

["David Smiley (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-17077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley resolved SOLR-17077.
---------------------------------
    Fix Version/s: main (10.0)
       Resolution: Fixed

Thanks for contributing!

> When rejoining shard leader election, we try to leave the election twice
> ------------------------------------------------------------------------
>
>                 Key: SOLR-17077
>                 URL: https://issues.apache.org/jira/browse/SOLR-17077
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrCloud
>    Affects Versions: 8.11.2, 9.4
>            Reporter: Pierre Salagnac
>            Priority: Minor
>             Fix For: main (10.0)
>
>          Time Spent: 1.5h
>  Remaining Estimate: 0h
>
> When rejoining leader election, we tries to delete the leader election twice in Zookeeper.
> This has no impact on the outcome of the leader election and this does not cause other failure. This is visible in logs (see bellow).
>  
> *Scénario details*
> Method {{ZkController.rejoinShardLeaderElection()}} leaves the election by removing the sequential election node and the leader registration node. This is done directly from there by invoking {{{}prevContext.cancelElection(){}}}.
> Then {{LeaderElector.retryElection()}} does that again (this.context.cancelElection()) but the second time around always fails as the Zookeeper nodes were already removed by the first attempt.
> Following log line is logged each time we invoke {{REJOINELECTION}} of a shard.
> _"No version found for ephemeral leader parent node, won't remove previous leader registration."_



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