janhoy commented on code in PR #828:
URL: https://github.com/apache/solr/pull/828#discussion_r877916321
##########
solr/core/src/test/org/apache/solr/TestDistributedGrouping.java:
##########
@@ -1652,6 +1653,39 @@ public void test() throws Exception {
i1,
"debug",
"true");
+
+ // Grouping with child doc and childValue() function
+ SolrInputDocument parent = new SolrInputDocument("id", "1", "class_s1",
"parent");
+ SolrInputDocument child =
+ new SolrInputDocument("id", "2", "class_s1", "child", "value_s1",
"abc123");
+ parent.addChildDocument(child);
+ indexDoc(parent);
+ commit();
+
+ // Distributed grouping with sort on a string field in child document
+ // Crashes with java.lang.ClassCastException: class java.lang.String
cannot be cast to class
+ // org.apache.lucene.util.BytesRef
+ // during TopGroupsResultTransformer.serializeTopGroups()
+ // in org.apache.solr.schema.FieldType.marshalStringSortValue(
Review Comment:
Thanks
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