Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/19940
@viirya this is the requirement I followed in this change which ensures
that is it safe to share the variable across all the operators, since all the
access are read only and there cannot be influences. Maybe this might be
relaxed in the future, but if we follow this requirement, we are sure that this
is safe.
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