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https://issues.apache.org/jira/browse/TAJO-1130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14495642#comment-14495642
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ASF GitHub Bot commented on TAJO-1130:
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Github user navis commented on the pull request:
https://github.com/apache/tajo/pull/423#issuecomment-93183502
Performance gain seemed hard to see if it's not running on very big cluster.
> 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
> Assignee: Navis
>
> 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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