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https://issues.apache.org/jira/browse/SPARK-18118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15701463#comment-15701463
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Apache Spark commented on SPARK-18118:
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User 'kiszk' has created a pull request for this issue:
https://github.com/apache/spark/pull/16032
> SpecificSafeProjection.apply of Java Object from Dataset to JavaRDD Grows
> Beyond 64 KB
> --------------------------------------------------------------------------------------
>
> Key: SPARK-18118
> URL: https://issues.apache.org/jira/browse/SPARK-18118
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Aleksander Eskilson
>
> For sufficiently wide or nested Java Objects, when SpecificSafeProjection
> attempts to recreate the object from an InternalRow, the generated
> SpecificSafeProjection.apply method is larger than allowed:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Code of method
> "apply(Ljava/lang/Object;)Ljava/lang/Object;" of class
> "org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificSafeProjection"
> grows beyond 64 KB
> {code}
> Although related, this issue appears not to have been resolved by
> SPARK-15285. Since there is only one top-level object when projecting,
> splitExpressions finds no additional Expressions to split. The result is a
> single large, nested Expression that forms the apply code.
> See the reproducer for an example [1].
> [1] - https://github.com/bdrillard/specific-safe-projection-error
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