Jihoon Son created TAJO-1130:
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             Summary: Concurrent execution of independent execution blocks 
                 Key: TAJO-1130
                 URL: https://issues.apache.org/jira/browse/TAJO-1130
             Project: Tajo
          Issue Type: Improvement
          Components: query master
            Reporter: Jihoon Son


Currently, Tajo can execute ExecutionBlocks one by one even though there remain 
enough resources to execute two or more ExecutionBlocks.
We can improve the query processing performance by executing two or more 
independent ExecutionBlocks if possible.



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