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Posted to issues@spark.apache.org by "Shivaram Venkataraman (JIRA)" <ji...@apache.org> on 2015/08/19 07:43:45 UTC
[jira] [Updated] (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 ]
Shivaram Venkataraman updated SPARK-6826:
-----------------------------------------
Target Version/s: (was: 1.5.0)
> `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
>
> 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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