Namgung Chan

Results 3 comments of Namgung Chan

@hailin0 thanks for your review. I fixed it. and add e2e test.

@EricJoy2048 @hailin0 I applied your reviews. except for `TIME` datatypes at spark. It does not supported at spark

It seems that the memory used by the function(UDF) is not being managed within the memory pool. maybe intended design of the memory pool. https://github.com/apache/datafusion/blob/9eca7d165c3ddcd3449e833df9391b8216e0f5bc/datafusion/execution/src/memory_pool/mod.rs#L54-L58