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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 -------------------------------------------------- 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:
