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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1345) Link casting errors in POCast to actual lines numbers in Pig script
Date Wed, 21 Apr 2010 18:26:57 GMT

    [ https://issues.apache.org/jira/browse/PIG-1345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12859471#action_12859471
] 

Ashutosh Chauhan commented on PIG-1345:
---------------------------------------

This will involve recording line numbers (and possibly more metadata) from parser to logical
layer, then to physical layer and then to backend and then back in case of exceptions. This
has been discussed before in some detail in PIG-908. Linking it against that.

> Link casting errors in POCast to actual lines numbers in Pig script
> -------------------------------------------------------------------
>
>                 Key: PIG-1345
>                 URL: https://issues.apache.org/jira/browse/PIG-1345
>             Project: Pig
>          Issue Type: Improvement
>          Components: impl
>    Affects Versions: 0.6.0
>            Reporter: Viraj Bhat
>
> For the purpose of easy debugging, I would be nice to find out where  my warnings are
coming from is in the pig script. 
> The only known process is to comment out lines in the Pig script and see if these warnings
go away.
> 2010-01-13 21:34:13,697 [main] WARN  org.apache.pig.PigServer - Encountered Warning IMPLICIT_CAST_TO_MAP
2 time(s) line 22 
> 2010-01-13 21:34:13,698 [main] WARN  org.apache.pig.PigServer - Encountered Warning IMPLICIT_CAST_TO_LONG
2 time(s) line 23
> 2010-01-13 21:34:13,698 [main] WARN  org.apache.pig.PigServer - Encountered Warning IMPLICIT_CAST_TO_BAG
1 time(s). line 26
> I think this may need us to keep track of the line numbers of the Pig script (via out
javacc parser) and maintain it in the logical and physical plan.
> It would help users in debugging simple errors/warning related to casting.
> Is this enhancement listed in the  http://wiki.apache.org/pig/PigJournal?
> Do we need to change the parser to something other than javacc to make this task simpler?
> "Standardize on Parser and Scanner Technology"
> Viraj

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