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Posted to dev@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2013/10/27 08:07:30 UTC

[jira] [Created] (TAJO-287) Improve Fragment to be more generic

Hyunsik Choi created TAJO-287:
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             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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