zwangsheng opened a new pull request, #2570:
URL: https://github.com/apache/celeborn/pull/2570

   
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   ### What changes were proposed in this pull request?
   Create netty pooled network memory allocator with 
`celeborn.network.memory.allocator.numArenas`.
   
   
   ### Why are the changes needed?
   Before this, when user call to build non shared pooled memory allocator will 
use the number of module client threads as the 
   core number.
   
   Intuitively we should respect to build memory allocator with user define 
`celeborn.network.memory.allocator.numArenas`.
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   
   ### How was this patch tested?
   None
   


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