Solr config upgrade tool

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Solr config upgrade tool

Hrishikesh Gadre-3
Hi,

I am currently working on a tool to identify (and in some cases fix) the incompatibilities in the Solr configuration (e.g. schema.xml, solrconfig.xml etc.) between major versions of Solr. 

My goal is to simplify the Solr upgrade process by providing upgrade instructions tailored to your configuration. These instuctions 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 jira)?
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?

The initial prototype of this tool is available @ https://github.com/hgadre/solr-upgrade-tool

For comments (or suggestions) please refer to https://issues.apache.org/jira/browse/SOLR-11229

I have implemented upgrade rules for Solr 4 -> Solr 5 and Solr 5 -> Solr 6 by referring to upgrade instructions in the Solr release notes. But during testing I found that many of the configuration changes (e.g. plugin deprecations) are not listed in the upgrade section. I am working on identifying such configuration changes and adding upgrade rules accordingly. I would love any community participation in improving this tool.

I will be presenting a talk titled "Apache Solr - Upgrading your upgrade experience" @ Lucene revolution this year. Please do attend to know more about simplifying Solr upgrade process.

Regards

Hrishikesh













                                                                                                                     

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