[jira] [Updated] (SOLR-9512) CloudSolrClient's cluster state cache can break direct updates to leaders

["Noble Paul (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-9512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Noble Paul updated SOLR-9512:
-----------------------------
    Attachment: SOLR-9512.patch

no tests yet

> CloudSolrClient's cluster state cache can break direct updates to leaders
> -------------------------------------------------------------------------
>
>                 Key: SOLR-9512
>                 URL: https://issues.apache.org/jira/browse/SOLR-9512
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Alan Woodward
>         Attachments: SOLR-9512.patch, SOLR-9512.patch
>
>
> This is the root cause of SOLR-9305 and (at least some of) SOLR-9390.  The process goes something like this:
> Documents are added to the cluster via a CloudSolrClient, with directUpdatesToLeadersOnly set to true.  CSC caches its view of the DocCollection.  The leader then goes down, and is reassigned.  Next time documents are added, CSC checks its cache again, and gets the old view of the DocCollection.  It then tries to send the update directly to the old, now down, leader, and we get ConnectionRefused.



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