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Posted to issues@carbondata.apache.org by "Kunal Kapoor (Jira)" <ji...@apache.org> on 2019/09/19 08:33:00 UTC

[jira] [Resolved] (CARBONDATA-3489) Optimizing the performance of sorting

     [ https://issues.apache.org/jira/browse/CARBONDATA-3489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kunal Kapoor resolved CARBONDATA-3489.
--------------------------------------
    Resolution: Fixed

> Optimizing the performance of sorting 
> --------------------------------------
>
>                 Key: CARBONDATA-3489
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-3489
>             Project: CarbonData
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.6.1
>            Reporter: Vikram Ahuja
>            Priority: Minor
>             Fix For: 1.6.1
>
>          Time Spent: 14.5h
>  Remaining Estimate: 0h
>
> Optimizing the performance of sorting
> Root cause: In case of sorting in the comparator classes(NewRowComparator, RawRowComparator, IntermediateSortTempRowComparator and  UnsafeRowComparator) a new SerializableComparator object is been created in the compare method everytime two objects are passed for comparison.
> Solution: We can reduce the number of SerializeableComparator objects that are been created by storing the SerializeableComparators of primitive datatypes  in a map and getting it from the map instead of creating a new SerializeableComparator everytime.



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