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Posted to common-dev@hadoop.apache.org by "Benjamin Reed (JIRA)" <ji...@apache.org> on 2006/06/07 23:41:30 UTC

[jira] Updated: (HADOOP-287) Speed up SequenceFile sort with memory reduction

     [ http://issues.apache.org/jira/browse/HADOOP-287?page=all ]

Benjamin Reed updated HADOOP-287:
---------------------------------

    Attachment: zoom-sort.patch

> Speed up SequenceFile sort with memory reduction
> ------------------------------------------------
>
>          Key: HADOOP-287
>          URL: http://issues.apache.org/jira/browse/HADOOP-287
>      Project: Hadoop
>         Type: Improvement

>   Components: io
>     Versions: 0.3.2
>     Reporter: Benjamin Reed
>  Attachments: zoom-sort.patch
>
> I replaced the merge sort with a quick sort and it yielded approx 30% improvement in sort time. It also reduced the memory requirement for sorting because the sort is done in place.

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