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Posted to mapreduce-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2019/01/18 21:41:00 UTC

[jira] [Assigned] (MAPREDUCE-7091) Speed up terasort on S3a

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7091?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran reassigned MAPREDUCE-7091:
-----------------------------------------

    Assignee: Steve Loughran

> Speed up terasort on S3a
> ------------------------
>
>                 Key: MAPREDUCE-7091
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7091
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: examples
>    Affects Versions: 3.1.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>
> Terasort is very slow on S3, because it still uses the classic rename-to-commit algorithm on the sort, even while teragen and the reporting can use the new committer
> Reason: {{org.apache.hadoop.examples.terasort.TeraOutputFormat}} has overriden {{getOutputCommitter}} even though it doesn't need to.



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