dsmiley commented on a change in pull request #580:
URL: https://github.com/apache/solr/pull/580#discussion_r797171492
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File path:
solr/core/src/java/org/apache/solr/core/TransientSolrCoreCacheDefault.java
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@@ -89,6 +86,21 @@ public TransientSolrCoreCacheDefault(CoreContainer
coreContainer) {
transientDescriptors = new LinkedHashMap<>(initialCapacity);
}
+ private void onEvict(SolrCore core) {
+ if (core.getOpenCount() > 1) {
Review comment:
From the pinning docs:
> The weight and expiration are evaluated when the entry is written into the
cache.
This suggests that if the weight changes, then it needs to be re-put into
the cache? For SolrCores in this cache, I think it would be awkward/entangled
to do this. Basically whenever anyone requests or returns a core, we call this
method. Not much lines-of-code but it's conceptually strange and readers of
the code and our future selves will wonder what's going on.
Any way, I think the approach here (put back on eviction) is expected to be
rare. Basically, the least requested item (probably hasn't been requested in a
while) is still being used, which suggests some long-running operation on it is
underway. Also I have some logs on this so we can observe if this is happening
more often.
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