I don't think I've seen any explicit statement, but I have seen at least a few user reports of problems caused by using a version of SolrJ that did not match the Solr server release. Maybe that related to Javabin versions.

I think it's even worse than that - a lot of the parameter symbol definitions, which get enhanced between Solr releases are actually kept in the SolrJ portion of the Solr source code. So, perversely, Solr depends on SolrJ.

I think I understand what you are trying to do, and maybe most of the time it may in fact work, but it may not be guaranteed to work.

-- Jack Krupansky

-----Original Message----- From: [email protected]
Sent: Friday, December 28, 2012 3:32 AM
To: [email protected]
Subject: Is there documentation anywhere describing interoperability of SolrJ?

Hi all,

For the ManifoldCF project, we have an output connector for Solr, and we'd like to port it to use SolrJ instead of homegrown code. However, I cannot find any mention anywhere of whether anyone has tried to maintain compatibility between later versions of SolrJ (e.g. 4.0.0) and previous versions of Solr (e.g. 3.x or 1.4). Can someone either point me at the document where this is stated, or confirm that there is indeed no such supported interoperability?

Thanks,
Karl

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