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Posted to dev@tajo.apache.org by "Hyunsik Choi (JIRA)" <ji...@apache.org> on 2013/12/19 16:32:18 UTC

[jira] [Resolved] (TAJO-9) Change the default intermediate data file format for hash repartitioning

     [ https://issues.apache.org/jira/browse/TAJO-9?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi resolved TAJO-9.
-----------------------------

       Resolution: Duplicate
    Fix Version/s: 0.8-incubating

> Change the default intermediate data file format for hash repartitioning
> ------------------------------------------------------------------------
>
>                 Key: TAJO-9
>                 URL: https://issues.apache.org/jira/browse/TAJO-9
>             Project: Tajo
>          Issue Type: Improvement
>          Components: data shuffle
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>             Fix For: 0.8-incubating
>
>
> For easy debugging, the hash repartitioning have used CSV as the default intermediate data format. CSV file format may cause parsing overhead, and it may cause relatively large intermediate data to be transmitted via networks. We need to change it to RawFile or another efficient file format.
> Digging PartitionedStoredExec class is a good starting point for this issue.



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