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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12749433#action_12749433
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Tarjei Huse commented on SOLR-236:
----------------------------------
Hi,
I tested the latest patch (field-collapse-5.patch ) and got:
HTTP Status 500 - 8452333 java.lang.ArrayIndexOutOfBoundsException: 8452333 at
org.apache.lucene.search.FieldComparator$StringOrdValComparator.copy(FieldComparator.java:660)
at
org.apache.solr.search.NonAdjacentDocumentCollapser$DocumentComparator.compare(NonAdjacentDocumentCollapser.java:254)
at
org.apache.solr.search.NonAdjacentDocumentCollapser$DocumentPriorityQueue.lessThan(NonAdjacentDocumentCollapser.java:192)
at
org.apache.lucene.util.PriorityQueue.insertWithOverflow(PriorityQueue.java:158)
at
org.apache.solr.search.NonAdjacentDocumentCollapser.doCollapsing(NonAdjacentDocumentCollapser.java:99)
at
org.apache.solr.search.AbstractDocumentCollapser.collapse(AbstractDocumentCollapser.java:174)
at
org.apache.solr.handler.component.CollapseComponent.doProcess(CollapseComponent.java:98)
at
org.apache.solr.handler.component.CollapseComponent.process(CollapseComponent.java:67)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:195)
at
...
I can provide the complete stacktrace if needed.
> Field collapsing
> ----------------
>
> Key: SOLR-236
> URL: https://issues.apache.org/jira/browse/SOLR-236
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.3
> Reporter: Emmanuel Keller
> Fix For: 1.5
>
> Attachments: collapsing-patch-to-1.3.0-dieter.patch,
> collapsing-patch-to-1.3.0-ivan.patch, collapsing-patch-to-1.3.0-ivan_2.patch,
> collapsing-patch-to-1.3.0-ivan_3.patch, field-collapse-3.patch,
> field-collapse-4-with-solrj.patch, field-collapse-5.patch,
> field-collapse-solr-236-2.patch, field-collapse-solr-236.patch,
> field-collapsing-extended-592129.patch, field_collapsing_1.1.0.patch,
> field_collapsing_1.3.patch, field_collapsing_dsteigerwald.diff,
> field_collapsing_dsteigerwald.diff, field_collapsing_dsteigerwald.diff,
> SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
> SOLR-236-FieldCollapsing.patch, solr-236.patch, SOLR-236_collapsing.patch,
> SOLR-236_collapsing.patch
>
>
> This patch include a new feature called "Field collapsing".
> "Used in order to collapse a group of results with similar value for a given
> field to a single entry in the result set. Site collapsing is a special case
> of this, where all results for a given web site is collapsed into one or two
> entries in the result set, typically with an associated "more documents from
> this site" link. See also Duplicate detection."
> http://www.fastsearch.com/glossary.aspx?m=48&amid=299
> The implementation add 3 new query parameters (SolrParams):
> "collapse.field" to choose the field used to group results
> "collapse.type" normal (default value) or adjacent
> "collapse.max" to select how many continuous results are allowed before
> collapsing
> TODO (in progress):
> - More documentation (on source code)
> - Test cases
> Two patches:
> - "field_collapsing.patch" for current development version
> - "field_collapsing_1.1.0.patch" for Solr-1.1.0
> P.S.: Feedback and misspelling correction are welcome ;-)
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