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https://issues.apache.org/jira/browse/PIG-1310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Dai closed PIG-1310.
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> ISO Date UDFs: Conversion, Trucation and Date Math
> --------------------------------------------------
>
>                 Key: PIG-1310
>                 URL: https://issues.apache.org/jira/browse/PIG-1310
>             Project: Pig
>          Issue Type: New Feature
>          Components: impl
>            Reporter: Russell Jurney
>            Assignee: Russell Jurney
>             Fix For: 0.7.0
>
>         Attachments: joda-mavenstuff.diff, pass.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> I've written UDFs to handle loading unix times, datemonth values and ISO 8601 
> formatted date strings, and working with them as ISO datetimes using jodatime.
> The working code is here: 
> http://github.com/rjurney/oink/tree/master/src/java/oink/udf/isodate/
> It needs to be documented and tests added, and a couple UDFs are missing, but 
> these work if you REGISTER the jodatime jar in your script.  Hopefully I can 
> get this stuff in piggybank before someone else writes it this time :)  The 
> rounding also may not be performant, but the code works.
> Ultimately I'd also like to enable support for ISO 8601 durations.  Someone 
> slap me if this isn't done soon, it is not much work and this should help 
> everyone working with time series.

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