epugh commented on code in PR #3436:
URL: https://github.com/apache/solr/pull/3436#discussion_r2226171681
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solr/core/src/java/org/apache/solr/update/processor/AtomicUpdateDocumentMerger.java:
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@@ -545,8 +545,11 @@ protected void doAddDistinct(SolrInputDocument toDoc,
SolrInputField sif, Object
final String name = sif.getName();
SolrInputField existingField = toDoc.get(name);
- Collection<Object> original =
- existingField != null ? existingField.getValues() : new ArrayList<>();
+ Collection<Object> original = existingField != null ?
existingField.getValues() : null;
Review Comment:
how is this differnet than what was previous?
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