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Date: Fri, 3 Aug 2012 22:01:02 +0000 (UTC)
From: "Jonathan Coveney (JIRA)" <jira@apache.org>
To: pig-dev@hadoop.apache.org
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Subject: [jira] [Commented] (PIG-2855) Provide a method to measure time
 spent in UDFs
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    [ https://issues.apache.org/jira/browse/PIG-2855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428409#comment-13428409 ] 

Jonathan Coveney commented on PIG-2855:
---------------------------------------

Love the idea.

One potential issue... with POUser func, it looks like your counter group is FuncSpec#toString, which means multiple invocations of the same UDF in different parts of the code will go to the same counter.
                
> Provide a method to measure time spent in UDFs
> ----------------------------------------------
>
>                 Key: PIG-2855
>                 URL: https://issues.apache.org/jira/browse/PIG-2855
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Dmitriy V. Ryaboy
>            Assignee: Dmitriy V. Ryaboy
>         Attachments: PIG-2855.2.patch, PIG-2855.patch
>
>
> When debugging slow jobs, it is often useful to know whether time is being spent in UDFs, and in which UDFs. This is easy to measure from within the framework, we should let users optionally track these metrics.

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