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From "Florian Leibert (flo) (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PIG-2531) Filter function for IsTupleInBag and IsTupleInTuple
Date Tue, 14 Feb 2012 07:32:59 GMT
Filter function for IsTupleInBag and IsTupleInTuple
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                 Key: PIG-2531
                 URL: https://issues.apache.org/jira/browse/PIG-2531
             Project: Pig
          Issue Type: New Feature
          Components: piggybank
    Affects Versions: 0.9.1
            Reporter: Florian Leibert (flo)
            Priority: Minor


It would be nice to have a FilterFunc that allows to filter based on a tuple in the stream
being part of either another tuple of a bag. 

Data (e.g. session data joined with e.g. follow-up sessions where)
> BAG: {('/login'), ('/show'), ('/logout?user_id=2000')}, TUPLE: ('/logout?user_id=2000')
> BAG: {('/home'), ('/about')}, TUPLE: ('/admin')
> BAG: {('login')}, TUPLE: ('/logout')

It would be great to be able to filter filter based on criteria <B1 CONTAINS  T1> or
<T1 CONTAINS T2>. In the above case, the only result of such an operation would be the
first entry '/logout?user_id=2000' - it should be obvious that this is useful.

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