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Posted to issues@lucene.apache.org by "Andrzej Bialecki (Jira)" <ji...@apache.org> on 2020/09/22 12:04:00 UTC
[jira] [Assigned] (SOLR-14691) Metrics reporting should avoid
creating objects
[ https://issues.apache.org/jira/browse/SOLR-14691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrzej Bialecki reassigned SOLR-14691:
---------------------------------------
Assignee: Andrzej Bialecki
> Metrics reporting should avoid creating objects
> -----------------------------------------------
>
> Key: SOLR-14691
> URL: https://issues.apache.org/jira/browse/SOLR-14691
> Project: Solr
> Issue Type: Improvement
> Components: metrics
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Priority: Critical
> Fix For: 8.7
>
>
> {{MetricUtils}} unnecessarily creates a lot of short-lived objects (maps and lists). This affects GC, especially since metrics are frequently polled by clients. We should refactor it to use {{MapWriter}} as much as possible.
> Alternatively we could provide our wrappers or subclasses of Codahale metrics that implement {{MapWriter}}, then a lot of complexity in {{MetricUtils}} wouldn't be needed at all.
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