HyukjinKwon commented on PR #58597:
URL: https://github.com/apache/spark/pull/58597#issuecomment-5582132156

   Thanks for the very thorough review. On reflection, the global cap here 
targets data that is within the submitting application's own trust boundary, 
and the one genuinely unbounded allocation site (AttributeGroup) is better 
addressed narrowly on its own, if at all, rather than via a cross-cutting 
configurable cap that also rejects Spark's own intermediate results (e.g. 
HashingTF's default 262144) and adds a per-row hook in VectorUDT. Closing this 
one; I may follow up narrowly on AttributeGroup separately. Appreciate the 
detailed analysis.


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