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Posted to issues@tajo.apache.org by "hyoungjunkim (JIRA)" <ji...@apache.org> on 2014/03/06 03:21:43 UTC

[jira] [Assigned] (TAJO-665) sort buffer size must be dealt as long type values.

     [ https://issues.apache.org/jira/browse/TAJO-665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

hyoungjunkim reassigned TAJO-665:
---------------------------------

    Assignee: hyoungjunkim

> sort buffer size must be dealt as long type values.
> ---------------------------------------------------
>
>                 Key: TAJO-665
>                 URL: https://issues.apache.org/jira/browse/TAJO-665
>             Project: Tajo
>          Issue Type: Improvement
>            Reporter: Hyunsik Choi
>            Assignee: hyoungjunkim
>             Fix For: 0.8-incubating, 1.0-incubating
>
>
> sort buffer size (tajo.executor.external-sort.buffer-mb in TajoConf) is used to determine in-memory buffer for external merge sort. Currently, its type is integer. So, if users can set more than 2GB to sort buffer size, external merge operator will meet  negative sort buffer size. Finally, it will cause significant performance degradation.



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