Colin Bartolome created SOLR-4414:
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Summary: 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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