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From "Kiyan Ahmadizadeh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CRUNCH-58) Implement PObject in Crunch/Scrunch
Date Thu, 06 Sep 2012 19:39:07 GMT
Kiyan Ahmadizadeh created CRUNCH-58:
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             Summary: Implement PObject in Crunch/Scrunch
                 Key: CRUNCH-58
                 URL: https://issues.apache.org/jira/browse/CRUNCH-58
             Project: Crunch
          Issue Type: New Feature
    Affects Versions: 0.3.0
            Reporter: Kiyan Ahmadizadeh
            Assignee: Kiyan Ahmadizadeh


FlumeJava has the concept of a PObject<T>, a container for a singleton of type T.  It
is meant represent the result of a distributed computation that yields a singleton value (for
example max, min, and length methods on PCollection<T>).  Generally speaking, the result
of any computation that combines/reduces a PCollection into a singleton value could be represented
by a PObject.  

Like PCollection, a PObject defers distributed computation until its value is actually used.
 

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