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