msokolov commented on a change in pull request #1592:
URL: https://github.com/apache/lucene-solr/pull/1592#discussion_r443535745
##########
File path:
solr/core/src/java/org/apache/solr/cloud/autoscaling/sim/SimClusterStateProvider.java
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@@ -351,10 +340,10 @@ public void simSetClusterState(ClusterState initialState)
throws Exception {
// DocCollection will be created later
collectionsStatesRef.put(dc.getName(), new
CachedCollectionRef(dc.getName(), dc.getZNodeVersion()));
collProperties.computeIfAbsent(dc.getName(), name -> new
ConcurrentHashMap<>()).putAll(dc.getProperties());
- opDelays.computeIfAbsent(dc.getName(),
Utils.NEW_HASHMAP_FUN).putAll(defaultOpDelays);
+ opDelays.computeIfAbsent(dc.getName(), o -> new
HashMap<String,Long>()).putAll(defaultOpDelays);
Review comment:
Is this some kind of tight inner loop where we need to be concerned
about squeezing out every last gram of garbage? I'm not super familiar with
this code, but it rather looks like a one-time initialization that will run
once for each collection, so really it's a handful of objects we're talking
about I think. Seems like a case of premature optimization, not really worth a
warning from the compiler, IMO
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