jon-chuang opened a new issue, #2459:
URL: https://github.com/apache/arrow-datafusion/issues/2459

   **Describe the solution you'd like**
   We want to pullup correlated subquery predicates to make it easier to 
rewrite them as semi/anti joins, so may want to make filter pushdown aware of 
correlated predicates and ignore them
   
   **Describe alternatives you've considered**
   
   It is perfectly acceptable, however, if it remains as it is, and the 
FilterPushdown is always followed by CorrelatedFilterPullup.
   
   **Additional context**
   Related: https://github.com/apache/arrow-datafusion/pull/2451
   


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