Hyunsik Choi created TAJO-928:
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Summary: Session variables should override query configs in
TajoConf.
Key: TAJO-928
URL: https://issues.apache.org/jira/browse/TAJO-928
Project: Tajo
Issue Type: Improvement
Components: distributed query plan, planner/optimizer
Reporter: Hyunsik Choi
Assignee: Hyunsik Choi
Fix For: 0.9.0
Currently, we should use tajo-site in order to change the configurations
related queries, such as optimization option or some parameters. It is never
practical because we need to restart a Tajo cluster in order to change the
config.
The main purpose of this issue is to refactor the system of session variable
and some part to recognize query configs to accept the session variables. Also,
when there are duplicated configs in session and TajoConf, session variables
should override the existing config of TajoConf.
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