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https://issues.apache.org/jira/browse/SPARK-34309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17280769#comment-17280769
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Yang Jie commented on SPARK-34309:
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Thx [~xkrogen] ~ I submitted a temporary pr which includes all the places where
guava cache is used,
{quote}[~LuciferYang] can you elaborate on where Guava Cache is used in
performance critical sections within Spark? Microbenchmarks are nice but it
would be good to understand what kind of effect this could have on overall
performance.
{quote}
I need to think about where to make a Microbenchmarks
> Use Caffeine instead of Guava Cache
> -----------------------------------
>
> Key: SPARK-34309
> URL: https://issues.apache.org/jira/browse/SPARK-34309
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core, SQL
> Affects Versions: 3.2.0
> Reporter: Yang Jie
> Priority: Minor
> Attachments: image-2021-02-05-18-08-48-852.png, screenshot-1.png
>
>
> Caffeine is a high performance, near optimal caching library based on Java 8,
> it is used in a similar way to guava cache, but with better performance. The
> comparison results are as follow are on the [caffeine benchmarks
> |https://github.com/ben-manes/caffeine/wiki/Benchmarks]
> At the same time, caffeine has been used in some open source projects like
> Cassandra, Hbase, Neo4j, Druid, Spring and so on.
>
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