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https://issues.apache.org/jira/browse/SOLR-5730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15143200#comment-15143200
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Christine Poerschke commented on SOLR-5730:
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bq. SolrIndexSearcher:
qr.setSegmentTerminatedEarly(earlyTerminatingSortingCollector.terminatedEarly());
– should we also set qr.partialResults?
No, I don't think so: {{qr.partialResults}} is used to indicate that _partial_
results were returned because the timeAllowed limit was exceeded. In comparison
{{qr.segmentTerminatedEarly}} indicates that _full_ results were returned and
we made use of the EarlyTerminatingSortingCollector which early terminated the
collecting of at least one segment. Had we not early-terminated for any of the
segments then the results would still have been the same full results. --- So
why would anyone care about the qr.segmentTerminatedEarly flag in the response?
If the flag is TRUE then the returned {{numFound}} will be potentially less
than the numFound returned by an identical search that didn't
segment-terminate-early. --- As an aside, "partialResults" in the response can
also occur if there is no timeAllowed specified but shards.tolerant=true was
specified and there was a problem talking to at least one of the shards.
> make Lucene's SortingMergePolicy and EarlyTerminatingSortingCollector
> configurable in Solr
> ------------------------------------------------------------------------------------------
>
> Key: SOLR-5730
> URL: https://issues.apache.org/jira/browse/SOLR-5730
> Project: Solr
> Issue Type: New Feature
> Reporter: Christine Poerschke
> Assignee: Christine Poerschke
> Priority: Minor
> Labels: blocker
> Fix For: 5.5, master
>
> Attachments: SOLR-5730-part1and2.patch, SOLR-5730-part1of2.patch,
> SOLR-5730-part1of2.patch, SOLR-5730-part2of2.patch, SOLR-5730-part2of2.patch
>
>
> *Example configuration (solrconfig.xml) :*
> {noformat}
> -<mergePolicy class="TieredMergePolicy"/>
> +<mergePolicyFactory class="org.apache.solr.index.SortingMergePolicyFactory">
> + <str name="wrapped.prefix">in</str>
> + <str name="in.class">org.apache.solr.index.TieredMergePolicyFactory</str>
> + <str name="sort">timestamp desc</str>
> +</mergePolicyFactory>
> {noformat}
> *Example use (EarlyTerminatingSortingCollector):*
> {noformat}
> &sort=timestamp+desc&segmentTerminateEarly=true
> {noformat}
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