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https://issues.apache.org/jira/browse/SOLR-17691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jan Høydahl resolved SOLR-17691.
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Resolution: Information Provided
Hi,
As Solr 8.4 is end of life and not recommended there will not be any updates
from the project.
The primary recommendation for you is to try out Solr 8.11.x, which is
[supported by Sitecore
10.4|https://support.sitecore.com/kb?id=kb_article_view&sysparm_article=KB0227897].
But note that even Solr 8.11 is EOL, but less out of date than 8.4. Note that
Solr 8.11 may also work with older sitecore since all 8.x are basically
compatible.
If that does not work for you, you can apply the fix from the issues you linked
to the source code of solr (git branch branch_8_4) and build your own release
of solr which you can use. If you do not know how to do that you can lookup
"Support" section of our web site and find individuals and companies who can
assist with such custom development.
> Request for Patch for Solr 8.4 - Zookeeper Status Error ("For input string:
> 'null'")
> -------------------------------------------------------------------------------------
>
> Key: SOLR-17691
> URL: https://issues.apache.org/jira/browse/SOLR-17691
> Project: Solr
> Issue Type: Bug
> Affects Versions: 8.4
> Environment: UAT/PROD
> Reporter: Aviral Sinha
> Priority: Critical
> Labels: patch
> Attachments: solrError.jpeg
>
>
> We are currently using {*}Sitecore 10 CMS{*}, which only supports {*}Solr
> 8.4{*}. Previously, we were using {*}ZooKeeper 3.4.14{*}, but since it has
> reached End of Life (EOL), we have upgraded to {*}ZooKeeper 3.8.4{*}.
> After upgrading and configuring Solr to point to the ZooKeeper host
> ({{{}zk_host{}}}), we are encountering an error on the {*}Solr Admin Page →
> ZooKeeper Status{*}:
> *"For input string: 'null'"*
> Please find the attached screenshot for reference.
> We noticed that this issue has already been addressed in later Solr versions,
> as referenced in the following JIRA cases:
> * SOLR-14463
> * SOLR-14669
> Since {*}our Sitecore application depends on Solr 8.4{*}, we are unable to
> upgrade to a higher Solr version. We kindly request you to provide a patch
> for Solr 8.4 to resolve this issue.
> Looking forward to your response.
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