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https://issues.apache.org/jira/browse/SPARK-6368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-6368:
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    Assignee: Apache Spark  (was: Yin Huai)

> Build a specialized serializer for Exchange operator. 
> ------------------------------------------------------
>
>                 Key: SPARK-6368
>                 URL: https://issues.apache.org/jira/browse/SPARK-6368
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Yin Huai
>            Assignee: Apache Spark
>            Priority: Critical
>
> Kryo is still pretty slow because it works on individual objects and relative 
> expensive to allocate. For Exchange operator, because the schema for key and 
> value are already defined, we can create a specialized serializer to handle 
> the specific schemas of key and value. 



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