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From "Joseph Adler (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PIG-2378) macros don't accept references to items within tuples as arguments
Date Wed, 16 Nov 2011 21:55:51 GMT
macros don't accept references to items within tuples as arguments
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                 Key: PIG-2378
                 URL: https://issues.apache.org/jira/browse/PIG-2378
             Project: Pig
          Issue Type: Improvement
    Affects Versions: 0.9.1
            Reporter: Joseph Adler


I'd like to be able to pass a reference to an item within a parameter to a Pig Macro.

For example, suppose that I had a relation A with the schema A:{id:long, header:(time:long,
type:chararray)}. I'd like to call a macro by typing:

   B = MY_MACRO(A, header.time);

but this does not currently work. Obviously, I could define a new relation as a workaround,
for example I could use some pig code like 

  AA = FOREACH a GENERATE *, header.time as time;
  B = MY_MACRO(AA, time);

But that's ugly and clunky

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