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From "Amit Sela (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SPARK-15489) Dataset kryo encoder fails on Collections$UnmodifiableCollection
Date Tue, 24 May 2016 20:39:13 GMT

    [ https://issues.apache.org/jira/browse/SPARK-15489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15298847#comment-15298847
] 

Amit Sela edited comment on SPARK-15489 at 5/24/16 8:38 PM:
------------------------------------------------------------

Well it looks like the codegen creates a `new SparkConf()`, instead of deserializing a "broadcasted"
one. 
I've tried adding the registrator configuration as a System parameter (-D), but it didn't
catch. Is the generated code executed in the JVM ? in the same one if running in standalone
?


was (Author: amitsela):
Well it looks like the codegen creates a ```java new SparkConf()```, instead of deserializing
a "broadcasted" one. 
I've tried adding the registrator configuration as a System parameter (-D), but it didn't
catch. Is the generated code executed in the JVM ? in the same one if running in standalone
?

> 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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