rbalamohan opened a new pull request, #4512:
URL: https://github.com/apache/iceberg/pull/4512

   BaseFileScanTask has a reference to "ResidualEvaluator" and is used only in 
"residual()" function. However, there can be corner cases where upstream has 
added large number of literals to residual evaluator (e.g in one of the cases 
Hive added 79000 LongLiterals in residual evaluator). When these tasks are 
serialized, they cause memory pressure. Intent is to avoid this, by computing 
the expression right upfront, and not retaining "ResidualEvalutor" in 
BaseFileScanTask.


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