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https://issues.apache.org/jira/browse/TAJO-42?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on TAJO-42 started by Hyunsik Choi.
> Divide SubQuery into FSM and execution block parts
> --------------------------------------------------
>
> Key: TAJO-42
> URL: https://issues.apache.org/jira/browse/TAJO-42
> Project: Tajo
> Issue Type: Improvement
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Labels: DAG
> Fix For: 0.2-incubating
>
>
> SubQuery plays two roles, which are a finite state machine and a unit to
> represent a part of a distributed direct acyclic graph. So, its design and
> code are somewhat ugly.
> The issue is for dividing SubQuery into two parts, a FSM for a subquery and
> an execution block representation.
> This issue would be the first step to improve Tajo's DAG framework.
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