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https://issues.apache.org/jira/browse/TAJO-1340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14699021#comment-14699021
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ASF GitHub Bot commented on TAJO-1340:
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Github user jinossy commented on the pull request:

    https://github.com/apache/tajo/pull/671#issuecomment-131678831
  
    Thanks Guys for the review! 
    But I found hangs in OffheapBlock. I am investigating the hangs in TAJO-1738
    If TAJO-1738 is ready, I will do rebase


> Change the default output file format.
> --------------------------------------
>
>                 Key: TAJO-1340
>                 URL: https://issues.apache.org/jira/browse/TAJO-1340
>             Project: Tajo
>          Issue Type: Improvement
>            Reporter: Hyunsik Choi
>            Assignee: Jinho Kim
>             Fix For: 0.11.0
>
>
> Currently, the default output file is CSV. Due to its nature, CSV has mainly 
> three problems:
>  * Its line or field delimiter can be duplicated to some character included 
> in the result data.
>  * Plan text file is likely to be larger than other file formats.
>  * Its read and write performance is slow.
> We need to change the default output file format into other file formats. We 
> also need to investigate which file format is the best for it.



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