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From Apache Wiki <wikidi...@apache.org>
Subject [Solr Wiki] Update of "FieldCollapsing" by KojiSekiguchi
Date Mon, 01 Feb 2010 06:26:43 GMT
Dear Wiki user,

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

The "FieldCollapsing" page has been changed by KojiSekiguchi.
The comment on this change is: change parameter name 'field.collapse' to collapse.field'.
http://wiki.apache.org/solr/FieldCollapsing?action=diff&rev1=14&rev2=15

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  The response is centred around collapse groups. A collapse group represents documents that
were collapsed during the search. A collapse group is identifier by the most relevant document
of that collapse group, which is document that did not get collapsed and remained present
in the search result. So the ids like 233238 are from documents that are also present in the
search result.
  
  = Distributed field collapsing =
- In a distributed environment fieldcollapsing is supported in a limited manner. While indexing
you must make sure that the documents of a collapse group are not scattered across different
shards. Documents of a collapse group must reside on the same shard, failing to do so will
corrupt your search results. Doing a distributed search with collapsing requires not extra
parameters to be send with the request. For example the following request is sufficient: http://localhost:8080/solr/select/?q=solr&field.collapse=my_field&shards=localhost:55527/solr,localhost:55529/solr
+ In a distributed environment fieldcollapsing is supported in a limited manner. While indexing
you must make sure that the documents of a collapse group are not scattered across different
shards. Documents of a collapse group must reside on the same shard, failing to do so will
corrupt your search results. Doing a distributed search with collapsing requires not extra
parameters to be send with the request. For example the following request is sufficient: http://localhost:8080/solr/select/?q=solr&collapse.field=my_field&shards=localhost:55527/solr,localhost:55529/solr
  
  = Other resources =
  Some other resources regarding to field collapsing:

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