Kazuaki Ishizaki created SPARK-20253:
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             Summary: Remove unnecessary nullchecks of a return value from 
Spark runtime routines in generated Java code
                 Key: SPARK-20253
                 URL: https://issues.apache.org/jira/browse/SPARK-20253
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.2.0
            Reporter: Kazuaki Ishizaki


While we know several Spark runtime routines never return null (e.g. 
{{UnsafeArrayData.toDoubleArray()}}, the generated code by Catalyst always 
checks whether the return value is null or not.
It is good to remove this nullcheck for reducing Java bytecode size and 
reducing the native code size.



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