Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/2685#issuecomment-61052515
Okay I think the issue is pretty tough. Unfortunately hive is directly
using the shaded objenesis classes. However, Spark needs Kryo 2.21 which
depends on the original objenesis classes.
Here is the hive code that uses it:
https://github.com/apache/hive/blob/branch-0.13/ql/src/java/org/apache/hadoop/hive/ql/exec/Utilities.java#L186
So we can't just remove kryo that hive uses. This is pretty ugly. One
solution might be to update chill in Spark so that Spark is using the same Kryo
version as Hive.
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