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https://issues.apache.org/jira/browse/SOLR-9462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15468125#comment-15468125
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Michael Sun edited comment on SOLR-9462 at 9/6/16 8:49 PM:
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One idea is to create a type of 'virtual cache' as a subclass of SolrCache. A
collection alias has virtual caches which doesn't do caching but provides
aggregated stats for caches used in SolrIndexSearcher represented by the
collection alias.
One question: how to find out SolrIndexSearcher instances using collection
name? It's necessary because in Aliases instance, there is only the name of
collections for a collection alias.
was (Author: michael.sun):
One idea is to create a type of 'virtual cache' as a subclass of SolrCache. A
collection alias has virtual caches which doesn't do caching but provides
aggregated stats for caches used in SolrIndexSearcher represented by the
collection alias.
> Add cache metrics for collection alias
> --------------------------------------
>
> Key: SOLR-9462
> URL: https://issues.apache.org/jira/browse/SOLR-9462
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: JMX
> Affects Versions: 6.2
> Reporter: Michael Sun
>
> Solr caches are major memory consumers and Solr cache metrics are critical in
> memory tuning. However in current implementation, only cache metrics for
> individual collection is available. To get the same metrics for a collection
> alias, which may cover tens collections, the only way is to aggregate metrics
> from each collection for the collection alias manually or using an external
> tool.
> The JIRA is to provide cache metrics for a collection alias to simplify the
> memory tuning for collection alias.
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