Aleksander Eskilson created SPARK-18118:
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Summary: 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,
as there is only one top-level object when projecting, so splitExpressions
finds no additional Expressions on which 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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