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https://issues.apache.org/jira/browse/SPARK-25335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-25335.
-------------------------------
Resolution: Fixed
Fix Version/s: 2.4.0
Issue resolved by pull request 22333
[https://github.com/apache/spark/pull/22333]
> Skip Zinc downloading if it's installed in the system
> -----------------------------------------------------
>
> Key: SPARK-25335
> URL: https://issues.apache.org/jira/browse/SPARK-25335
> Project: Spark
> Issue Type: Improvement
> Components: Build
> Affects Versions: 2.4.0
> Reporter: Dongjoon Hyun
> Assignee: Dongjoon Hyun
> Priority: Minor
> Fix For: 2.4.0
>
>
> Zinc is 23.5MB.
> {code}
> $ curl -LO https://downloads.lightbend.com/zinc/0.3.15/zinc-0.3.15.tgz
> % Total % Received % Xferd Average Speed Time Time Time
> Current
> Dload Upload Total Spent Left Speed
> 100 23.5M 100 23.5M 0 0 35.4M 0 --:--:-- --:--:-- --:--:-- 35.3M
> {code}
> Currently, Spark downloads Zinc once. However, it occurs too many times in
> build systems. This issue aims to skip Zinc downloading when the system
> already has it.
> {code}
> $ build/mvn clean
> exec: curl --progress-bar -L
> https://downloads.lightbend.com/zinc/0.3.15/zinc-0.3.15.tgz
> ########################################################################
> 100.0%
> {code}
> This will reduce many resources(CPU/Networks/DISK) at least in Mac and
> Docker-based build system.
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