asfimport opened a new issue, #78:
URL: https://github.com/apache/arrow-go/issues/78

   perhaps not for this PR, but, depending on the number of rows and cols this 
record contains, this may be a very large allocation, and very big memory chunk.
   it could be more interesting performance wise to write n rows instead of 
everything in one big chunk.
   
   also, to reduce the memory pressure on the GC, we should probably (re)use 
this slice-of-slice of strings.
   
    
   
   **Reporter**: [Anson Qian](https://issues.apache.org/jira/browse/ARROW-4736) 
/ @anson627
   
   <sub>**Note**: *This issue was originally created as 
[ARROW-4736](https://issues.apache.org/jira/browse/ARROW-4736). Please see the 
[migration documentation](https://github.com/apache/arrow/issues/14542) for 
further details.*</sub>


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