Profimedia created SOLR-13832:
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Summary: MoreLikeThis parsers SimpleMLTQParser and CloudMLTQParser
- termvectors vs fieldvalues
Key: SOLR-13832
URL: https://issues.apache.org/jira/browse/SOLR-13832
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: MoreLikeThis
Affects Versions: 7.7.2
Reporter: Profimedia
It seems SimpleMLTQParser and CloudMLTQParser have one big difference.
SimpleMLTQParser uses term vectors of original item for searching more like
this items, but CloudMLTQParser uses field values for this searching.
It means that if you don't have *stored* all values for the specified fields,
then you search only by fields values from the stored fields. And this is a big
problem. It's a breaking change for easy transfer from Solr standalone to Solr
Cloud.
It would be better to have some mlt param to set up, if data should be read
from field stored values or from the terms values.
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