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https://issues.apache.org/jira/browse/PIG-1062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12776035#action_12776035
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Thejas M Nair commented on PIG-1062:
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bq. You can get the same info from the counters without unnecessarily
complicating tuple processing, imo. In fact you can use (num bytes read / num
records read) to get the old calculation, and not rely on number of samples and
local average size estimates.
Yes, I agree that using counters would have been a cleaner way to get total
number of tuples in reducer, but it looks there is no reliable way to get the
complete counter information of a map from the reducer part of the MR job.
> load-store-redesign branch: change SampleLoader and subclasses to work with
> new LoadFunc interface
> ---------------------------------------------------------------------------------------------------
>
> Key: PIG-1062
> URL: https://issues.apache.org/jira/browse/PIG-1062
> Project: Pig
> Issue Type: Sub-task
> Reporter: Thejas M Nair
> Assignee: Thejas M Nair
>
> This is part of the effort to implement new load store interfaces as laid out
> in http://wiki.apache.org/pig/LoadStoreRedesignProposal .
> PigStorage and BinStorage are now working.
> SampleLoader and subclasses -RandomSampleLoader, PoissonSampleLoader need to
> be changed to work with new LoadFunc interface.
> Fixing SampleLoader and RandomSampleLoader will get order-by queries working.
> PoissonSampleLoader is used by skew join.
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