[jira] Commented: (PIG-402) order by on single field with user defined comparator fails

["Shravan Matthur Narayanamurthy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629574#action_12629574 ] 

Shravan Matthur Narayanamurthy commented on PIG-402:
----------------------------------------------------

This is what I have understood - Comparators in Hadoop assume that you know the type of key(keyClass) beforehand and do not let you configure the type dynamically. So I feel, the only way out for us is to wrap the key inside a tuple whenever, a User Defined Comparison Func is used.

If any of you have other suggestions, please comment.

> order by on single field with user defined comparator fails
> -----------------------------------------------------------
>
>                 Key: PIG-402
>                 URL: https://issues.apache.org/jira/browse/PIG-402
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: types_branch
>            Reporter: Olga Natkovich
>            Assignee: Shravan Matthur Narayanamurthy
>             Fix For: types_branch
>
>
> register udf.jar;
> a = load 'data';
> c = order a by $0 using MyOrderUDF();
> store c into 'out',

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