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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TAJO-287) Improve Fragment to be more generic
Date Sun, 27 Oct 2013 07:07:30 GMT
Hyunsik Choi created TAJO-287:
---------------------------------

             Summary: Improve Fragment to be more generic
                 Key: TAJO-287
                 URL: https://issues.apache.org/jira/browse/TAJO-287
             Project: Tajo
          Issue Type: Improvement
          Components: physical operator
            Reporter: Hyunsik Choi
            Assignee: Hyunsik Choi
             Fix For: 0.8-incubating


The current Fragment is only for a file. This patch improves Fragment to be more generic.


First of all, I've changed Fragment to an interface and the original Fragment to FileFragment
respectively. FragmentProto is changed to contain a table name and a bytestring which contains
an storage-dependent contents. Then, the added FragmentConvertor transforms FragmentProto
to a specified Fragment instance. It would be very useful to represent various fragment types
like a row range of Hbase and database tables.



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