asfimport commented on issue #42275:
URL: https://github.com/apache/arrow/issues/42275#issuecomment-2184204519

   [Wes 
McKinney](https://issues.apache.org/jira/browse/PARQUET-435?#comment-15107511) 
/ @wesm:
   I haven't started working on anything yet; I mainly need PARQUET-434 right 
this second. 
   
   I was thinking about having each column reader able to populate a 
preallocated C array of an indicated size from a row group (returning the 
actual length if there is not enough data available in a row group), as opposed 
to having one function call per value.
   
   Aside: the lack of unit tests is causing me some anxiety – I will put up a 
patch for PARQUET-437 so that we can start asking for unit tests with further 
libparquet patches. 


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