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https://issues.apache.org/jira/browse/TEZ-3334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15371247#comment-15371247
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Jonathan Eagles commented on TEZ-3334:
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[~sseth], [~gopalv] is there an example that can be pointed to for a reference
implementation? In addition, a rough design will help to make sure an
implementation is sufficiently generic.
> Tez Custom Shuffle Handler
> --------------------------
>
> Key: TEZ-3334
> URL: https://issues.apache.org/jira/browse/TEZ-3334
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jonathan Eagles
>
> 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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