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https://issues.apache.org/jira/browse/SOLR-236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen Weiss updated SOLR-236:
-------------------------------
Attachment: SOLR-236-1_4_1-paging-totals-working.patch
This would be the patch that I'm describing... I used it with the Solr 1.4.1
release tarball. It's just Martijn's latest patch minus a few lines (by his
suggestion) that mess up the totals and paging. Again, you want to make sure
your server is well configured - we are not really Java people and it took a
while to get the settings to a place where we didn't have OOM errors every day.
We're using these startup options with Jetty:
-Xms10240m -Xmx10240m -XX:NewRatio=5 -XX:+UseParNewGC
That RAM total is half the RAM available on the machine - we leave the rest of
the RAM open for disk caches. It will take up it's half of the RAM very
quickly but then it hovers there and has only ever gone over the limit once
since September, which seemed to be related to an unoptimized index (after
replacing an unusually large # of docs).
> 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
> Assignee: Shalin Shekhar Mangar
> Fix For: Next
>
> 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, DocSetScoreCollector.java,
> field-collapse-3.patch, field-collapse-4-with-solrj.patch,
> field-collapse-5.patch, field-collapse-5.patch, field-collapse-5.patch,
> field-collapse-5.patch, field-collapse-5.patch, field-collapse-5.patch,
> field-collapse-5.patch, field-collapse-5.patch, field-collapse-5.patch,
> field-collapse-5.patch, field-collapse-5.patch, field-collapse-5.patch,
> field-collapse-5.patch, field-collapse-5.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,
> NonAdjacentDocumentCollapser.java, NonAdjacentDocumentCollapserTest.java,
> quasidistributed.additional.patch,
> SOLR-236-1_4_1-paging-totals-working.patch, SOLR-236-1_4_1.patch,
> SOLR-236-FieldCollapsing.patch, SOLR-236-FieldCollapsing.patch,
> SOLR-236-FieldCollapsing.patch, SOLR-236-trunk.patch, SOLR-236-trunk.patch,
> SOLR-236-trunk.patch, SOLR-236-trunk.patch, SOLR-236-trunk.patch,
> SOLR-236.patch, SOLR-236.patch, SOLR-236.patch, SOLR-236.patch,
> SOLR-236.patch, SOLR-236.patch, SOLR-236.patch, SOLR-236.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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