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From "Michael Armbrust (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-15489) Dataset kryo encoder fails on Collections$UnmodifiableCollection
Date Mon, 23 May 2016 21:14:13 GMT

    [ https://issues.apache.org/jira/browse/SPARK-15489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15297095#comment-15297095
] 

Michael Armbrust commented on SPARK-15489:
------------------------------------------

Wild guess... https://github.com/apache/spark/blob/07c36a2f07fcf5da6fb395f830ebbfc10eb27dcc/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala#L554

That is probably not using spark's config correctly.

> Dataset kryo encoder fails on Collections$UnmodifiableCollection
> ----------------------------------------------------------------
>
>                 Key: SPARK-15489
>                 URL: https://issues.apache.org/jira/browse/SPARK-15489
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.6.1
>            Reporter: Amit Sela
>
> When using Encoders with kryo to encode generically typed Objects in the following manner:
> public static <T> Encoder<T> encoder() {
>   return Encoders.kryo((Class<T>) Object.class);
> }
> I get a decoding exception when trying to decode `java.util.Collections$UnmodifiableCollection`,
which probably comes from Guava's `ImmutableList`.
> This happens when running with master = local[1]. Same code had no problems with RDD
api.



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