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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:34:04 UTC

[jira] [Resolved] (SPARK-6826) `hashCode` support for arbitrary R objects

     [ https://issues.apache.org/jira/browse/SPARK-6826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon resolved SPARK-6826.
---------------------------------
    Resolution: Incomplete

> `hashCode` support for arbitrary R objects
> ------------------------------------------
>
>                 Key: SPARK-6826
>                 URL: https://issues.apache.org/jira/browse/SPARK-6826
>             Project: Spark
>          Issue Type: Bug
>          Components: SparkR
>            Reporter: Shivaram Venkataraman
>            Priority: Major
>              Labels: bulk-closed
>
> From the SparkR JIRA
> digest::digest looks interesting, but it seems to be more heavyweight than our requirements. One relatively easy way to do this is to serialize the given R object into a string (serialize(object, ascii=T)) and then just call the string hashCode function on this. FWIW it looks like digest follows a similar strategy where the md5sum / shasum etc. are calculated on serialized objects.



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