tadeja commented on issue #51638:
URL: https://github.com/apache/arrow/issues/51638#issuecomment-5899659090

   PR #50877 introduced `simdjson::fractured_json_string` and testing exact 
outputs in `reader_test.cc`
   
   Now [simdjson 5.0](https://github.com/simdjson/simdjson/releases/tag/v5.0.0) 
changes FracturedJson (simdjson/simdjson#2870, simdjson/simdjson#2878 and 
simdjson/simdjson#2879 change whitespace, line breaks, key order in tables),
   which already causes `parquet-reader-test` failures for MinGW jobs and soon 
other jobs (probably `ARM64 macOS 14 C++` and `AMD64 Conda C++ AVX2` when 
Docker layer cache gets invalidated.)
   
   I have a workaround in #51640 to get MinGW two jobs from 5.0.1 to bundled 
4.6.4 simdjson and passing CI for the time being.
   
   Likely this needs a more permanent fix follow-up in `parquet/reader_test.cc` 
to accommodate for both test outputs, 4.6 and 5.0
   (I have a working demo by 🤖 on my fork 
https://github.com/tadeja/arrow/pull/2)
   
   Fyi, @kou @Reranko05 


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