[jira] [Resolved] (SOLR-13641) Undocumented and untested "cleanupThread" functionality in LFUCache and FastLRUCache

["Andrzej Bialecki (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-13641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrzej Bialecki resolved SOLR-13641.
-------------------------------------
    Resolution: Won't Fix

LFUCache is EOL in Solr 8x and removed in Solr 9.0.

> Undocumented and untested "cleanupThread" functionality in LFUCache and FastLRUCache
> ------------------------------------------------------------------------------------
>
>                 Key: SOLR-13641
>                 URL: https://issues.apache.org/jira/browse/SOLR-13641
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Andrzej Bialecki
>            Priority: Major
>
> Both LFUCache and FastLRUCache support a functionality for running evictions asynchronously, in a thread different from the one that executes a {{put(K, V)}} operation.
> Additionally, these asynchronous evictions can use either a one-off thread created after each put, or a single long-running cleanup thread.
> However, this functionality is not documented anywhere and it's not tested. It should either be removed, if it's not used, or properly documented and tested.



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