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So I have some cores in one solr server and some cores in another solr server and I need to join them.

The schema of the cores are different with no matching attribute name but matching attribute value. I tried to do it with join & shards but both didn't work. Can you help me out?

  • attribute1 is in abc:7892/solr/core1

  • attribute2, attribute3 is in xyz:8983/solr/core2

{!join from=attribute1 to=attribute2 fromIndex="xyz:8983/solr/core2"} attribute3:*

Error Message :

Cross-core join: no such core xyz:8983/solr/core2

Thanks.

Alex
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1 Answers1

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join does not support joining across different servers, even in SolrCloud mode it has constraints in that sense, see here.

What you could do is use Streaming Expressions, by using a search as a source, and then you have several types of joins etc, look at the docs and examples.

Persimmonium
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  • Hi now with SOLR version 8.6.0, it is possible to join between multiple shared and multiple collection. I tried to achieve the same but getting error. Please refer https://stackoverflow.com/questions/76578595/apache-solr-from-version-8-6-0-joining-between-multiple-collections-and-multip – Chirag Shah Jun 29 '23 at 06:49