Hyunsik Choi created TAJO-24:
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Summary: Cost-based Optimizer for Tajo
Key: TAJO-24
URL: https://issues.apache.org/jira/browse/TAJO-24
Project: Tajo
Issue Type: New Feature
Components: optimizer
Reporter: Hyunsik Choi
Assignee: Hyunsik Choi
The current query optimizer is too simple and is not extensible. In addition,
it does not support scalar and table subqueries.
So, I would like to propose the implementation of new optimizer which is
extensible and is based on some cost model.
In my opinion, this work is not trivial and will take a very long time. Also,
we will have many discussions on this issue. This is the first draft, and I
would like to continue to improve the requirements and details.
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