atris commented on a change in pull request #815: LUCENE-8213: Introduce
Asynchronous Caching in LRUQueryCache
URL: https://github.com/apache/lucene-solr/pull/815#discussion_r327629874
##########
File path: lucene/core/src/java/org/apache/lucene/search/LRUQueryCache.java
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@@ -732,8 +774,16 @@ public ScorerSupplier scorerSupplier(LeafReaderContext
context) throws IOExcepti
if (docIdSet == null) {
if (policy.shouldCache(in.getQuery())) {
- docIdSet = cache(context);
- putIfAbsent(in.getQuery(), docIdSet, cacheHelper);
+ // If asynchronous caching is requested, perform the same and return
+ // the uncached iterator
+ if (executor != null) {
+ cacheAsynchronously(context, cacheHelper);
+ return in.scorerSupplier(context);
+ }
+ else {
+ docIdSet = cache(context);
Review comment:
+1, that is a great observation, thanks for highlighting it!
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