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https://issues.apache.org/jira/browse/CALCITE-4193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ruben Q L updated CALCITE-4193:
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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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