[Resolved] (PIG-2541) Automatic record provenance (source tagging) for PigStorage

     [
https://issues.apache.org/jira/browse/PIG-2541?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai resolved PIG-2541.
-----------------------------

       Resolution: Fixed
    Fix Version/s: 0.11
     Release Note: 
We add a new option -tagsource to PigStorage. With this flag, we can get the INPUT_FILE_NAME as the first
column of the output data. eg:

a = load '1.txt' using PigStorage('\t', '-tagsource');
     Hadoop Flags: Reviewed

Unit tests pass. test-patch:
     [exec] -1 overall.  
     [exec] 
     [exec]     +1  <at> author.  The patch does not contain any  <at> author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec] 
     [exec]     -1 javadoc.  The javadoc tool appears to have generated 1 warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.
     [exec] 
     [exec]     -1 release audit.  The applied patch generated 533 release audit warnings (more than the trunk's
current 530 warnings).

javac and release audit warning is unrelated. 

Patch committed to trunk, thanks Prashant!

> 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
>             Fix For: 0.11
>
>         Attachments: PIG-2541.patch, PIG-2541_2.patch, PIG-2541_3.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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