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Posted to dev@lucene.apache.org by "Sandro Mario Zbinden (JIRA)" <ji...@apache.org> on 2013/07/26 16:55:48 UTC
[jira] [Created] (SOLR-5079) Create ngroups for pivot faceting
Sandro Mario Zbinden created SOLR-5079:
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Summary: Create ngroups for pivot faceting
Key: SOLR-5079
URL: https://issues.apache.org/jira/browse/SOLR-5079
Project: Solr
Issue Type: Improvement
Affects Versions: 5.0, 4.5
Reporter: Sandro Mario Zbinden
To save network traffic it would be great to now how many entries a facet list contains without loading the complete facet list. This issue is created because of an out of memory in loading the pivot facet.
The facet.pivot result would then look like
q=facet.pivot=cat,id&facet.pivot.ngroup=true
<arr name="cat,id">
<lst>
<str name="field">cat/str>
<str name="value">a</str>
<int name="count">20</int>
<arr name="pivot">
<lst>
<str name="field">id</str>
<int name="value">69</int>
<int name="count">10</int>
</lst>
<lst>
<str name="field">id</str>
<int name="value">71</int>
<int name="count">10</int>
</lst>
<int name="ngroup">2</int> <-- The new ngroup parm
</lst>
</arr>
If you add another new param for example facet.pivot.visible the
result could create less traffic
especially if there are a lot of ids and the param facet.limit=-1 is set
q=facet.pivot=cat,id&facet.ngroup=true&f.id.facet.pivot.visible=false
<arr name="cat,id">
<lst>
<str name="field">cat/str>
<str name="value">a</str>
<int name="count">20</int>
<int name="ngroup">2</int> <-- The new ngroup parm
</lst>
</arr>
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