SOLR-788 added Distributed MLT to Solr 4.1, but I have not been able to
get it to work. I don't know if it's user error, which of course is
very possible. If it is user error, I'd like to know what I'm doing
wrong so I can fix it. I am actually using a recent checkout of Solr
4.2, not the released 4.1.
I put some extensive information on SOLR-4414, an issue filed by another
user having a similar problem. If you look for the last comment from me
on Feb 7 that has a code block, you'll see Solr's response when I use
MoreLikeThisComponent.
https://issues.apache.org/jira/browse/SOLR-4414
Only the last seven of the query parameters were included on the URL -
the rest of them are in solrconfig.xml. Due to echoParams=all, the only
part of the request handler definition that you can't see in the
response is the fact that last-components contains spellcheck.
I redacted the company domain name from the shards and the one document
matching the query from the <result> tag, but there are no other changes
to the response.
If I send an identical query to the shard core that actually contains
the document rather than the core with the shards parameter, I get MLT
results.
I have heard recently that Solr 4.x has hardcoded the unique field name
for SolrCloud sharding as id ... but my uniqueKey field name is tag_id.
Could this be my problem? It would be a monumental development effort
to change that field name in our application. I am not using SolrCloud
for this index.
Thanks,
Shawn
