From ceb53248ceae77305c24369378103bf3b08cf54c Mon Sep 17 00:00:00 2001
From: LSmyrnaios <lsmyrnaios@gmail.com>
Date: Wed, 21 Dec 2022 13:44:58 +0200
Subject: [PATCH] Fix merge-commit, missing the improvement introduced in
 commit: 63c9caaf96

---
 .../dnetlib/repo/manager/service/AggregationServiceImpl.java | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/main/java/eu/dnetlib/repo/manager/service/AggregationServiceImpl.java b/src/main/java/eu/dnetlib/repo/manager/service/AggregationServiceImpl.java
index d4add2b..425da82 100644
--- a/src/main/java/eu/dnetlib/repo/manager/service/AggregationServiceImpl.java
+++ b/src/main/java/eu/dnetlib/repo/manager/service/AggregationServiceImpl.java
@@ -66,11 +66,8 @@ public class AggregationServiceImpl implements AggregationService {
 
     private <T extends AggregationInfo> Map<String, List<T>> createYearMap(List<T> aggregationHistory) {
 
-        aggregationHistory = aggregationHistory.stream()
-                .sorted(Comparator.comparing(AggregationInfo::getDate).reversed())
-                .collect(Collectors.toList());
-
         return aggregationHistory.stream()
+                .sorted(Comparator.comparing(AggregationInfo::getDate).reversed())
                 .collect(Collectors.groupingBy(item -> getYear(item.getDate())));
     }