[jira] [Updated] (TAJO-1041) Tuple Block Iteration Model

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TAJO-1041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi updated TAJO-1041:
-------------------------------
    Assignee:     (was: Hyunsik Choi)

> Tuple Block Iteration Model
> ---------------------------
>
>                 Key: TAJO-1041
>                 URL: https://issues.apache.org/jira/browse/TAJO-1041
>             Project: Tajo
>          Issue Type: Improvement
>            Reporter: Hyunsik Choi
>              Labels: block_iteration
>             Fix For: block_iteration
>
>
> Currently, our physical executor is based on a tuple-at-a-time model. It is a traditional model and is well known that it is not efficient in terms of CPU costs.
> Also, I think that we can design integrated interface for row block with considering row block and vectorized row block. I'll add some possibility to extend row block iteration model to be vectorized.
> In addition, in order to achieve more CPU efficient implementations, we will make good use of off heap data structure (TAJO-907) and code generation (TAJO-906).
> This is an umbrella issue, which is to change current execution model to block iteration model.



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