westonpace commented on issue #14606:
URL: https://github.com/apache/arrow/issues/14606#issuecomment-1319137754

   This is probably just checking the obvious things but can you confirm you 
are freeing the memory allocated here: 
https://github.com/microsoft/FHIR-Analytics-Pipelines/blob/78f4767bbb976cdc57cd05fa7810088dac13a458/FhirToDataLake/native/parquet/cpp/src/ParquetWriter.cpp#L22
   
   Also, can you monitor the value of 
`arrow::default_memory_pool()->bytes_allocated()`?  Does that value grow or is 
it only RSS?
   
   I'm just trying to narrow down what might be the culprit.


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