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Posted to issues@calcite.apache.org by "Ruben Q L (Jira)" <ji...@apache.org> on 2020/08/26 07:23:00 UTC

[jira] [Updated] (CALCITE-4193) Implement new sort operator: ExternalSort

     [ https://issues.apache.org/jira/browse/CALCITE-4193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ruben Q L updated CALCITE-4193:
-------------------------------
    Summary: Implement new sort operator: ExternalSort  (was: Implement new sort operator: EnumerableExternalSort)

> Implement new sort operator: ExternalSort
> -----------------------------------------
>
>                 Key: CALCITE-4193
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4193
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>            Reporter: Ruben Q L
>            Priority: Major
>
> Sometimes we need to sort a big volume of data which does not fit into memory. In this situation EnumerableSort will cause an OutOfMemoryError.
> The solution for such a scenario will be using a different sorting algorithm: [External Sort|https://en.wikipedia.org/wiki/External_sorting].
> The goal of the current ticket is to implement a new operator (EnumerableExternalSort) to provide this feature.



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