Github user kiszk commented on the issue:
https://github.com/apache/spark/pull/19811
@mgaido91 The latest code does not generate a loop for initializations.
This is an optimization to reduce the JVM bytecode size.
As @cloud-fan pointed out
[here](https://github.com/apache/spark/pull/19811#issuecomment-348144586), it
should be addressed by another PR since it is another story.
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