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https://issues.apache.org/jira/browse/HADOOP-287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley resolved HADOOP-287.
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Resolution: Duplicate
Fix Version/s: 0.17.0
HADOOP-2919 moved to quick sort.
> Speed up SequenceFile sort with memory reduction
> ------------------------------------------------
>
> Key: HADOOP-287
> URL: https://issues.apache.org/jira/browse/HADOOP-287
> Project: Hadoop Core
> Issue Type: Improvement
> Components: io
> Affects Versions: 0.17.0
> Reporter: Benjamin Reed
> Assignee: Chris Douglas
> Fix For: 0.17.0
>
> Attachments: 287-1.patch, 287-2.patch, 287-2.patch, s.patch,
> zoom-sort.patch, 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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