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Pig >> mail # user >> Conditional execution of 'generate' clauses


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Stan Rosenberg 2011-10-02, 16:22
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Conditional execution of 'generate' clauses
Hi Folks,

I came across a use case where I'd like to do something like this:

FOREACH X {
   ...
   t = DISTINCT (...)
   if (!IsEmpty(t))
      GENERATE foo, ...
}

Thus, 'generate' is conditionally executed and the control flow depends on
the value of some tuple 't'.
Can this be done in pig?

Thanks,

stan

P.S. Please ignore my previous email; I accidentally triggered send before I
had a chance to finish it.
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Dmitriy Ryaboy 2011-10-03, 07:46
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Stan Rosenberg 2011-10-03, 14:16
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Alan Gates 2011-10-03, 15:42
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Stan Rosenberg 2011-10-03, 18:18
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Alan Gates 2011-10-03, 18:33