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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "DistributedSearch" by KenKrugler
Date Fri, 24 Feb 2012 00:27:12 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Solr Wiki" for change notification.

The "DistributedSearch" page has been changed by KenKrugler:
http://wiki.apache.org/solr/DistributedSearch?action=diff&rev1=21&rev2=22

     * 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
     * Doesn't support MoreLikeThis -- (see https://issues.apache.org/jira/browse/SOLR-788
)
+    * Doesn't support [[Join]] -- (see https://issues.apache.org/jira/browse/LUCENE-3759)
     * 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.
     * Doesn't currently support date faceting (see https://issues.apache.org/jira/browse/SOLR-1709
)
     * Makes it more inefficient to use a high "start" parameter. For example, if you request
start=500000&rows=25 on an index with 500,000+ docs per shard, this will currently result
in 500,000 records getting sent over the network from the shard to the coordinating Solr instance.
If you had a single-shard index, in contrast, only 25 records would ever get sent over the
network. (Granted, setting start this high is not something many people need to do.)

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