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https://issues.apache.org/jira/browse/NIFI-11669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Bean resolved NIFI-11669.
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Resolution: Won't Fix
> Allow expired entries in distributed cache to be pruned
> -------------------------------------------------------
>
> Key: NIFI-11669
> URL: https://issues.apache.org/jira/browse/NIFI-11669
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Affects Versions: 1.21.0
> Reporter: Mark Bean
> Priority: Major
>
> DetectDuplicate processor adds entries to a DistributedMapCacheClient
> service. The processor also has an Age Off Duration property. The cached
> value is removed from the cache only if a subsequent duplicate is detected
> and the (optional) Age Off Duration has expired. The result is that entries
> which are beyond their age off duration remain in the cache needlessly and
> continue to consume memory.
> There should be a proactive pruning process to eliminate the expired entries.
> Two thoughts come to mind: using a DistributedMapCache implementation which
> expires entries. This is the most flexible as other users of the cache would
> benefit as well. Alternatively, the DetectDuplicate processor could
> periodically prune the cache.
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