Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/20779
I am not sure. If you set it to -1,every new function generates a new inner
class, i.e. 1+ entries in the constant pool. So a not very big query can crash.
Moreover, since that is a constant, I think that if an error is not
reproducible with that value, then it is not a issue. Otherwise I think we can
generate many "theoretical" issue which in practise are not affecting us, since
anyway there are limits which we are just making hard to reach, but we cannot
avoid.
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