Christine Poerschke created SOLR-8114:
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Summary: Grouping.java: sort variable names confusion
Key: SOLR-8114
URL: https://issues.apache.org/jira/browse/SOLR-8114
Project: Solr
Issue Type: Wish
Reporter: Christine Poerschke
Assignee: Christine Poerschke
Priority: Minor
The undistributed case i.e. {{solr/Grouping.java}}'s variable names confusingly
differ from the names used by lucene (and by the distributed case).
Specifically the name {{groupSort}} in lucene (and in the distributed case)
means between-groups-sort but in the Grouping.java it means within-group-sort.
lucene:
{code}
TermFirstPassGroupingCollector(... Sort groupSort ...)
TermSecondPassGroupingCollector(... Sort groupSort, Sort withinGroupSort ...)
{code}
solr:
{code}
SearchGroupsFieldCommand.java: firstPassGroupingCollector = new
TermFirstPassGroupingCollector(field.getName(), groupSort, topNGroups);
TopGroupsFieldCommand.java: secondPassCollector = new
TermSecondPassGroupingCollector(... groupSort, sortWithinGroup ...);
Grouping.java: public Sort groupSort; // the sort of the documents
*within* a single group.
Grouping.java: public Sort sort; // the sort between groups
Grouping.java: firstPass = new TermFirstPassGroupingCollector(groupBy, sort,
actualGroupsToFind);
Grouping.java: secondPass = new TermSecondPassGroupingCollector(... sort,
groupSort ...);
{code}
This JIRA proposes to rename the Grouping.java variables to remove the
confusion:
* part 1: in Grouping.java rename groupSort to withinGroupSort
* part 2: in Grouping.java rename sort to groupSort
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