js8544 commented on PR #40041:
URL: https://github.com/apache/arrow/pull/40041#issuecomment-1941117906

   Happy Chinese New Year!
   
   @pitrou I think this PR is to fix the regression introduced in 
https://github.com/apache/arrow/pull/12742 rather than a feature. #12742 sets 
GANDIVA_ENABLE_OBJECT_CODE_CACHE default to true but forget to change the 
default cache size. @niyue Is my understanding correct? 
   
   However I do agree that we can further investigate the size limit of the 
cache. 500000 objects should require too much memory. Suppose one expression 
takes 1KB (my wild guess), that would be 500MB.


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