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https://issues.apache.org/jira/browse/SOLR-16562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17640229#comment-17640229
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Ben Manes commented on SOLR-16562:
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To clarify, the change is to detect keys that were mutated while in the Map,
causing their equals / hashCode to change. This causes corruption and
previously could end up in an infinite loop. The cache now detects corruption
and throws an error, which should help fix this misuse / violation of the Map
contract. Unfortunately Lucene query types are not always immutable which
results in this unsafe behavior.
> Upgrade to Caffeine 3.1.2
> -------------------------
>
> Key: SOLR-16562
> URL: https://issues.apache.org/jira/browse/SOLR-16562
> Project: Solr
> Issue Type: Task
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Build
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Priority: Major
>
> SOLR-16489 found an issue with infinite loop and during that Caffeine 3.1.2
> was released that has some infinite loop detection added.
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