walterddr opened a new issue, #9272:
URL: https://github.com/apache/pinot/issues/9272

   Problem
   ===
   Currently we do not split data table when size is too large. 
   thus we set the default GRPC channel msg size to 128MB. however this is 
still an issue when join two large tables together (especially using broadcast 
JOIN)
   
   Propose
   ===
   - introduce data table splitter so that each data block is small enough. 
this also help pipeline processing and speed up the overall latency. 
   - allow mailbox to send data blocks with variating number of splits. 
   
   


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