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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12564952#action_12564952
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Charles Hornberger commented on SOLR-236:
-----------------------------------------
NegatedDocSet is throwing "Unsupported Operation" exceptions:
org.apache.solr.common.SolrException:Unsupported Operation
at org.apache.solr.search.NegatedDocSet.iterator(NegatedDocSet.java:77)
at org.apache.solr.search.DocSetBase.getBits(DocSet.java:183)
at org.apache.solr.search.NegatedDocSet.getBits(NegatedDocSet.java:27)
at org.apache.solr.search.DocSetBase.intersection(DocSet.java:199)
at org.apache.solr.search.BitDocSet.intersection(BitDocSet.java:30)
at
org.apache.solr.search.SolrIndexSearcher.getDocListAndSetNC(SolrIndexSearcher.java:1109)
at
org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:811)
at
org.apache.solr.search.SolrIndexSearcher.getDocListAndSet(SolrIndexSearcher.java:1258)
at
org.apache.solr.handler.component.CollapseComponent.process(CollapseComponent.java:103)
at
org.apache.solr.handler.SearchHandler.handleRequestBody(SearchHandler.java:155)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:117)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:902)
at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:275)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
Not quite sure what search is triggering this path thru the code, but it is not
happening on every request; just some ... am firing up the debugger now to see
what I can learn, but thought I'd post this anyway to see if anyone has any
tips.
> 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
> Attachments: field-collapsing-extended-592129.patch,
> field_collapsing_1.1.0.patch, field_collapsing_1.3.patch,
> field_collapsing_dsteigerwald.diff, field_collapsing_dsteigerwald.diff,
> SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
> SOLR-236-FieldCollapsing.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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