[GitHub] [solr] janhoy commented on a diff in pull request #828: SOLR-12457: improve compatibility/support for sort by field-function

[GitBox <gi...@apache.org>]

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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