diegoceccarelli commented on a change in pull request #300: SOLR-11831: Skip
second grouping step if group.limit is 1 (aka Las Vegas Patch)
URL: https://github.com/apache/lucene-solr/pull/300#discussion_r295253612
##########
File path:
solr/core/src/java/org/apache/solr/handler/component/QueryComponent.java
##########
@@ -288,6 +328,13 @@ protected void prepareGrouping(ResponseBuilder rb) throws
IOException {
groupingSpec.setMain(params.getBool(GroupParams.GROUP_MAIN, false));
groupingSpec.setNeedScore((rb.getFieldFlags() &
SolrIndexSearcher.GET_SCORES) != 0);
groupingSpec.setTruncateGroups(params.getBool(GroupParams.GROUP_TRUNCATE,
false));
+
+
groupingSpec.setSkipSecondGroupingStep(params.getBool(GroupParams.GROUP_SKIP_DISTRIBUTED_SECOND,
false));
+ boolean isReranking = (rb.getRankQuery() != null);
+ if (groupingSpec.isSkipSecondGroupingStep() &
!allowSkipSecondGroupingStep(groupingSpec.getWithinGroupSortSpec(),
groupingSpec.getGroupSortSpec(), isReranking)){
Review comment:
> edit: a little further below in the class there's a
cmd.setSegmentTerminateEarly(false); // not supported, silently ignore any
segmentTerminateEarly flag for example
Checking for this and failing if it is true will modify the current
behavior - do you think we should fail?
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