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https://issues.apache.org/jira/browse/SPARK-53160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-53160:
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Description:
In general, Java built-in `Files.writeString` is over 4 times faster than
Google `Files.asCharSink`.
{code}
scala> val s = "a".repeat(500_000_000)
scala> spark.time(com.google.common.io.Files.asCharSink(new
java.io.File("/dev/null"), java.nio.charset.StandardCharsets.UTF_8).write(s))
Time taken: 265 ms
scala> spark.time(java.nio.file.Files.writeString(Path.of("/dev/null"), s))
Time taken: 59 ms
val res1: java.nio.file.Path = /dev/null
{code}
> Use Java `Files.writeString` instead of `Files.asCharSink`
> ----------------------------------------------------------
>
> Key: SPARK-53160
> URL: https://issues.apache.org/jira/browse/SPARK-53160
> Project: Spark
> Issue Type: Sub-task
> Components: Kubernetes, MLlib, Spark Core, SQL, SS, YARN
> Affects Versions: 4.1.0
> Reporter: Dongjoon Hyun
> Assignee: Dongjoon Hyun
> Priority: Major
> Labels: pull-request-available
>
> In general, Java built-in `Files.writeString` is over 4 times faster than
> Google `Files.asCharSink`.
> {code}
> scala> val s = "a".repeat(500_000_000)
> scala> spark.time(com.google.common.io.Files.asCharSink(new
> java.io.File("/dev/null"), java.nio.charset.StandardCharsets.UTF_8).write(s))
> Time taken: 265 ms
> scala> spark.time(java.nio.file.Files.writeString(Path.of("/dev/null"), s))
> Time taken: 59 ms
> val res1: java.nio.file.Path = /dev/null
> {code}
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