Jonathan Gray created SPARK-15258:
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Summary: Nested/Chained case statements generate codegen over 64k
exception
Key: SPARK-15258
URL: https://issues.apache.org/jira/browse/SPARK-15258
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.6.1
Reporter: Jonathan Gray
Nested/Chained case-when expressions generate a codegen goes beyound 64k
exception.
A test attached demonstrates this behaviour.
I'd like to try and fix this but don't really know the best place to start.
Ideally, I'd like to avoid the codegen fallback as with large volumes this
hurts performance.
This is similar(ish) to SPARK-13242 but I'd like to see if there are any
alternatives to the codegen fallback approach.
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