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Posted to solr-commits@lucene.apache.org by Apache Wiki <wi...@apache.org> on 2010/07/06 13:23:56 UTC
[Solr Wiki] Update of "DistributedSearch" by AndrewClegg
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The "DistributedSearch" page has been changed by AndrewClegg.
The comment on this change is: Clarified dupe handling policy.
http://wiki.apache.org/solr/DistributedSearch?action=diff&rev1=14&rev2=15
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= Distributed Searching Limitations =
* Documents must have a unique key and the unique key must be stored (stored="true" in schema.xml)
- * When duplicate doc IDs are received, Solr chooses the first doc and discards subsequent ones
+ * When docs with duplicate unique keys are encountered, Solr chooses the first doc and discards subsequent ones
* No distributed idf (see http://wunderwood.org/most_casual_observer/2007/04/progressive_reranking.html ) (Also see https://issues.apache.org/jira/browse/SOLR-1632 for some new work on this feature.)
* Doesn't support !QueryElevationComponent
* The index could change between stages, e.g. a document that matched a query and was subsequently changed may no longer match but will still be retrieved.