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Posted to issues@tez.apache.org by "Jonathan Eagles (JIRA)" <ji...@apache.org> on 2017/03/27 22:41:41 UTC

[jira] [Updated] (TEZ-3334) Tez Custom Shuffle Handler

     [ https://issues.apache.org/jira/browse/TEZ-3334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Eagles updated TEZ-3334:
---------------------------------
    Attachment: TEZ-3334.1.patch

> Tez Custom Shuffle Handler
> --------------------------
>
>                 Key: TEZ-3334
>                 URL: https://issues.apache.org/jira/browse/TEZ-3334
>             Project: Apache Tez
>          Issue Type: New Feature
>            Reporter: Jonathan Eagles
>         Attachments: TEZ-3334.1.patch
>
>
> For conditions where auto-parallelism is reduced (e.g. TEZ-3222), a custom shuffle handler could help reduce the number of fetches and could more efficiently fetch data. In particular if a reducer is fetching 100 pieces serially from the same mapper it could do this in one fetch call. 



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