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https://issues.apache.org/jira/browse/SPARK-928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14212132#comment-14212132
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Andrew Ash commented on SPARK-928:
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Latest Chill (0.5.0) is still using Kryo 2.21 so this is still waiting on a
Chill update
https://github.com/twitter/chill/blob/0.5.0/project/Build.scala#L13
> Add support for Unsafe-based serializer in Kryo 2.22
> ----------------------------------------------------
>
> Key: SPARK-928
> URL: https://issues.apache.org/jira/browse/SPARK-928
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Reporter: Matei Zaharia
> Priority: Minor
> Labels: starter
> Fix For: 1.0.0
>
>
> This can reportedly be quite a bit faster, but it also requires Chill to
> update its Kryo dependency. Once that happens we should add a
> spark.kryo.useUnsafe flag.
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