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https://issues.apache.org/jira/browse/PIG-2541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13214181#comment-13214181
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Daniel Dai commented on PIG-2541:
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Here are my thoughts:
1. As Dmitriy said, we need to include this column in getSchema.
2. Hive name this column INPUT__FILE__NAME, we can follow this convention, no
need to invent something new.
3. Usually user don't care about the input file name for intermediate file,
name conflict should be rare. I would like to fail out when this happen to make
the patch simpler(believe parser already do the name conflict check).
> Automatic record provenance (source tagging) for PigStorage
> -----------------------------------------------------------
>
> Key: PIG-2541
> URL: https://issues.apache.org/jira/browse/PIG-2541
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Affects Versions: 0.9.1
> Reporter: Richard Ding
> Assignee: Prashant Kommireddi
> Attachments: PIG-2541.patch
>
>
> There are a lot of interests in knowing where the data comes from when
> loading from a directory (or a set of directories). One can do it manually
> (see https://cwiki.apache.org/confluence/display/PIG/FAQ). But it will be
> more convenient for users if we implement this in the PigStorage with a
> command line option (e.g., pig.source.tagging=true/false) to turn it on/off.
> By default it will be off.
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