FelixYBW commented on issue #6960:
URL: 
https://github.com/apache/incubator-gluten/issues/6960#issuecomment-2302683617

   The global memory allocation is used for spill's compression buffer. The 
memory is counted into executor.overhead memory in Spark. We can do the same 
for Gluten.
   
   In spark, the overhead memory includes reducer's netty memory, compression 
buffer memory, the memory native library allocated.
   
   In Gluten the overhead memory includes reducer's netty memory, memory using 
global allocator, all the std::container's memory.


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