[jira] Created: (HADOOP-6150) Need to be able to instantiate a comparator instance from a comparator string without creating a TFile.Reader object

[Hong Tang (JIRA)]

Need to be able to instantiate a comparator instance from a comparator string 
without creating a TFile.Reader object
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                 Key: HADOOP-6150
                 URL: https://issues.apache.org/jira/browse/HADOOP-6150
             Project: Hadoop Common
          Issue Type: Improvement
          Components: io
    Affects Versions: 0.20.0, 0.21.0
            Reporter: Hong Tang
            Assignee: Hong Tang
            Priority: Minor


Occasionally, we want have the same instance of comparator object represented 
by the TFile comparator string. We should be able to do that without requiring 
to first open up a tfile that was previously written use the same comparator.

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