Hrishikesh Gadre commented on SOLR-11229:

The initial prototype of this tool is available @ 

> Add a configuration upgrade tool for Solr
> -----------------------------------------
>                 Key: SOLR-11229
>                 URL: https://issues.apache.org/jira/browse/SOLR-11229
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: 6.6
>            Reporter: Hrishikesh Gadre
> Despite widespread enterprise adoption, Solr lacks automated upgrade tooling. 
> It has long been a challenge for users to understand the implications of a 
> Solr upgrade. Users must manually review the Solr release notes to identify 
> configuration changes either to fix backwards incompatibilities or to utilize 
> latest features in the new version. Additionally, users must identify a way 
> to migrate existing index data to the new version (either via an index 
> upgrade or re-indexing the raw data).
> Solr config upgrade tool aims to simplify the upgrade process by providing 
> upgrade instructions tailored to your configuration. These instructions can 
> help you to answer following questions
> - Does my Solr configuration have any backwards incompatible sections? If yes 
> which ones?
> - For each of the incompatibility - what do I need to do to fix this 
> incompatibility? Where can I get more information about why this 
> incompatibility was introduced (e.g. references to Lucene/Solr jiras)?
> - Are there any changes in Lucene/Solr which would require me to do a full 
> reindexing OR can I get away with an index upgrade?

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