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https://issues.apache.org/jira/browse/SOLR-4414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13573826#comment-13573826
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Mark Miller commented on SOLR-4414:
-----------------------------------
I'm guessing that's kind of the uglish situation we have with distrib search
and components at the moment.
The sub searches are hitting the /select handler unless you use shards.qt - so
the select handler needs the component as well or you have to use shards.qt. Or
do everything in the /select handler, but be share not to hard code shards in
solrconfig.xml (or you get infinite recursion)
> MoreLikeThis on a shard finds no interesting terms if the document queried is
> not in that shard
> -----------------------------------------------------------------------------------------------
>
> Key: SOLR-4414
> URL: https://issues.apache.org/jira/browse/SOLR-4414
> Project: Solr
> Issue Type: Bug
> Components: MoreLikeThis, SolrCloud
> Affects Versions: 4.1
> Reporter: Colin Bartolome
>
> Running a MoreLikeThis query in a cloud works only when the document being
> queried exists in whatever shard serves the request. If the document is not
> present in the shard, no "interesting terms" are found and, consequently, no
> matches are found.
> h5. Steps to reproduce
> * Edit example/solr/collection1/conf/solrconfig.xml and add this line, with
> the rest of the request handlers:
> {code:xml}
> <requestHandler name="/mlt" class="solr.MoreLikeThisHandler" />
> {code}
> * Follow the [simplest SolrCloud
> example|http://wiki.apache.org/solr/SolrCloud#Example_A:_Simple_two_shard_cluster]
> to get two shards running.
> * Hit this URL:
> [http://localhost:8983/solr/collection1/mlt?mlt.fl=includes&q=id:3007WFP&mlt.match.include=false&mlt.interestingTerms=list&mlt.mindf=1&mlt.mintf=1]
> * Compare that output to that of this URL:
> [http://localhost:7574/solr/collection1/mlt?mlt.fl=includes&q=id:3007WFP&mlt.match.include=false&mlt.interestingTerms=list&mlt.mindf=1&mlt.mintf=1]
> The former URL will return a result and list some interesting terms. The
> latter URL will return no results and list no interesting terms. It will also
> show this odd XML element:
> {code:xml}
> <null name="response"/>
> {code}
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