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From "Hyunsik Choi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TAJO-201) Physical execution plan should be reused for same task
Date Tue, 24 Sep 2013 05:22:07 GMT
Hyunsik Choi created TAJO-201:
---------------------------------

             Summary: Physical execution plan should be reused for same task
                 Key: TAJO-201
                 URL: https://issues.apache.org/jira/browse/TAJO-201
             Project: Tajo
          Issue Type: Improvement
          Components: worker
            Reporter: Hyunsik Choi
             Fix For: 0.3-incubating


In worker, one physical execution plan is generated for each task. If we reuse this, we can
have more optimization opportunities. For example, a broadcast table can be shared among all
tasks executed in the same worker. Also, it's initialization cost and deserialization of json
can be eliminated.

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