hnwyllmm opened a new issue, #736:
URL: https://github.com/apache/arrow-java/issues/736

   ### Describe the enhancement requested
   
   `ArrowVectorIterator::consume` only concern about the 
`ArrowVectorIterator#targetBatchSize` but not the memory used.
   
   Let's suppose a scenario:
   1. A database table with a longtext field;
   2. All of the rows in the table are larger than 500M;
   3. `ArrowVectorIterator#targetBatchSize` is 256;
   
   We need at least for 125G memory to get one record batch.


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