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https://issues.apache.org/jira/browse/SOLR-14576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17142196#comment-17142196
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Mike Drob commented on SOLR-14576:
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Do you have GC logs or a heap dump analysis highlighting it? I'd be interested
to learn more.
> HttpCacheHeaderUti.etagCoreCache should not use a SolrCore as key
> -----------------------------------------------------------------
>
> Key: SOLR-14576
> URL: https://issues.apache.org/jira/browse/SOLR-14576
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Noble Paul
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> GC performance is affected when the key is a complex data structure. We can
> make it
> {code}
> private static WeakIdentityMap<String, EtagCacheVal> etagCoreCache =
> WeakIdentityMap.newConcurrentHashMap();
> {code}
> instead of
> {code}
> private static WeakIdentityMap<SolrCore, EtagCacheVal> etagCoreCache =
> WeakIdentityMap.newConcurrentHashMap();
> {code}
>
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