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https://issues.apache.org/jira/browse/PIG-20?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12545968
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Patrick Hunt commented on PIG-20:
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1) I can randomize the data however notice that I'm typically using in reverse
order, such that the sort is not just "passing through". I'll add this.
2) What is the contract for instantiateFunc (and getComparator) method, I can't
find it documented anywhere. This would help a lot in understanding how to
address this issue. Perhaps someone can update the javadoc to make it explicit
(would be beneficial going fwd, even after this change). I would be willing to
do this but I don't understand the background/expectations of this function.
Original author avail?
3a) I have eclipse set to use spaces instead of tabs, must have snuck in during
copy/paste. I'll take a look.
3b) er, looks like another eclipse issue (my config), I'll fix the source.
> Sorting using custom comparison functions
> ------------------------------------------
>
> Key: PIG-20
> URL: https://issues.apache.org/jira/browse/PIG-20
> Project: Pig
> Issue Type: New Feature
> Components: impl
> Reporter: Olga Natkovich
> Attachments: usercompare.patch
>
>
> Currently, onlu string based sorting is supported. Once we have types,
> numeric sort will be supported as well. However, soem users express need for
> custome comparison functions for sort.
> Alan put together a design document for this:
> http://wiki.apache.org/pig/UserDefinedOrdering
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