[jira] [Commented] (SOLR-9462) Add cache metrics for collection alias

["Mark Miller (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-9462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15743036#comment-15743036 ] 

Mark Miller commented on SOLR-9462:
-----------------------------------

We don't actually do per collection now - we do per SolrCore. See https://issues.apache.org/jira/browse/SOLR-9858 and https://issues.apache.org/jira/browse/SOLR-4735 for related discussion.

> 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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