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Posted to issues@carbondata.apache.org by "Jacky Li (JIRA)" <ji...@apache.org> on 2016/10/16 01:22:20 UTC

[jira] [Assigned] (CARBONDATA-318) Implement an ExternalSorter that makes maximum usage of memory while sorting

     [ https://issues.apache.org/jira/browse/CARBONDATA-318?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacky Li reassigned CARBONDATA-318:
-----------------------------------

    Assignee: Jacky Li

> Implement an ExternalSorter that makes maximum usage of memory while sorting
> ----------------------------------------------------------------------------
>
>                 Key: CARBONDATA-318
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-318
>             Project: CarbonData
>          Issue Type: Sub-task
>            Reporter: Jacky Li
>            Assignee: Jacky Li
>             Fix For: 0.2.0-incubating
>
>
> Change SortDataRows into an External Sorter, it should sort in memory until it reach configured size, then spill to disk. It should provide following interface:
> 1. addRow:  insert rows into the sorter.
> 2. getIterator: will return an iterator that iterates on sorted rows, the sorted row could come from memory or files



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