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Posted to dev@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2013/09/24 07:22:07 UTC

[jira] [Created] (TAJO-201) Physical execution plan should be reused for same task

Hyunsik Choi created TAJO-201:
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             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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