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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/11/27 10:06:58 UTC

[jira] [Resolved] (SPARK-18122) Fallback to Kryo for unknown classes in ExpressionEncoder

     [ https://issues.apache.org/jira/browse/SPARK-18122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved SPARK-18122.
-------------------------------
    Resolution: Won't Fix

> Fallback to Kryo for unknown classes in ExpressionEncoder
> ---------------------------------------------------------
>
>                 Key: SPARK-18122
>                 URL: https://issues.apache.org/jira/browse/SPARK-18122
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 2.0.1
>            Reporter: Michael Armbrust
>            Priority: Critical
>
> In Spark 2.0 we fail to generate an encoder if any of the fields of the class are not of a supported type.  One example is {{Option\[Set\[Int\]\]}}, but there are many more.  We should give the user the option to fall back on opaque kryo serialization in these cases for subtrees of the encoder, rather than failing.



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