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From "Herman van Hovell (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-13325) Create a high-quality 64-bit hashcode expression
Date Wed, 23 Mar 2016 20:06:25 GMT

     [ https://issues.apache.org/jira/browse/SPARK-13325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Herman van Hovell reassigned SPARK-13325:
-----------------------------------------

    Assignee: Herman van Hovell

> Create a high-quality 64-bit hashcode expression
> ------------------------------------------------
>
>                 Key: SPARK-13325
>                 URL: https://issues.apache.org/jira/browse/SPARK-13325
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Herman van Hovell
>            Assignee: Herman van Hovell
>
> Spark currently lacks a high quality 64-bit hashcode. This is especially useful for the
HyperLogLog++ aggregate & potentially other probabilistic datastructures.
> I have been looking at xxHash for a while now, and I'd like to see if we can get the
same (stellar) performance in Java/Scala.



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