Jihoon Son created TAJO-1683:
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Summary: Improve join order optimization of a query involving
multiple commutative joins and non-commutative joins
Key: TAJO-1683
URL: https://issues.apache.org/jira/browse/TAJO-1683
Project: Tajo
Issue Type: Improvement
Components: planner/optimizer
Reporter: Jihoon Son
TAJO-1352 is the issue to improve our join order optimization, but has a
limitation. That is, when a query involves multiple commutative joins and
non-commutative joins, the join order of commutative joins is fixed in an order
of in an order of their occurrences in the query without optimization process.
This should be improved because the response time of a query will be highly
increased due to the suboptimal join order as the query involves multiple joins.
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