[jira] [Created] (CRUNCH-587) Add missing filter(), filterByKey() and filterByValue() functions from Lambda LTable implementation

[David Whiting (JIRA)]

David Whiting created CRUNCH-587:
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             Summary: Add missing filter(), filterByKey() and filterByValue() 
functions from Lambda LTable implementation
                 Key: CRUNCH-587
                 URL: https://issues.apache.org/jira/browse/CRUNCH-587
             Project: Crunch
          Issue Type: Improvement
            Reporter: David Whiting
            Assignee: David Whiting
            Priority: Minor
             Fix For: 0.14.0


I missed implementing a filter() method specifically for LTables (ie. returning 
LTable<> instead of LCollection<Pair<>>). This patch adds those, and also 
filterByKey() and filterByValue() because they are trivial to implement and 
will play nicer with predicates supplied as method references.



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