sigram commented on a change in pull request #825: SOLR-13677 All Metrics 
Gauges should be unregistered by the objects that registered them
URL: https://github.com/apache/lucene-solr/pull/825#discussion_r312872979
 
 

 ##########
 File path: solr/core/src/java/org/apache/solr/search/LFUCache.java
 ##########
 @@ -254,8 +255,13 @@ private static String calcHitRatio(long lookups, long 
hits) {
     return "0." + hundredths;
   }
 
+
+  private MetricsInfo metricsInfo;
+
   @Override
   public void initializeMetrics(SolrMetricManager manager, String 
registryName, String tag, String scope) {
+    metricsInfo = new MetricsInfo(manager, registryName, 
getUniqueMetricTag(tag));
+    tag = metricsInfo.getTag();
 
 Review comment:
   Not needed, since the call below uses metricsInfo.getTag().

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