Question About Solr Grouping

[Furkan KAMACI]

Hi;

When I try this:

...
Set<String> urlSet = new HashSet<>();
Map<String, String> urlMap = new HashMap<>();
...

solrParams = new ModifiableSolrParams();
solrParams.add("q", "*");
solrParams.add("fq", "-title:[* TO *]");
solrParams.add("start", start.toString());
solrParams.add("rows", step.toString());
solrParams.add("sort", "url asc");
solrParams.add("group", "true");
solrParams.add("group.field", "domain");
solrParams.add("group.limit", "1");
solrParams.add("fl", "url,domain");
List<GroupCommand> groupCommands =
solrResponse.getGroupResponse().getValues();
for (GroupCommand groupCommand : groupCommands) {
   for (Group group : groupCommand.getValues()) {
      for (SolrDocument solrDocument : group.getResult()) {
         String url = (String) solrDocument.get("url");
         String domain = (String) solrDocument.get("domain");
         urlSet.add(url);
         urlMap.put(domain, url);
      }
   }
}
...

urlSet size and urlMap size are not same. On the other hand urlMap size
changes at every run?

PS: domain is required field at schema.

Thanks;
Furkan KAMACI