[GitHub] [arrow] mapleFU commented on pull request #35605: GH-35571: [C++][CI][Parquet] adding comparing logs in Decryption tests

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mapleFU commented on PR #35605:
URL: https://github.com/apache/arrow/pull/35605#issuecomment-1548972064

   ```
   D:/a/arrow/arrow/cpp/src/parquet/encryption/test_encryption_util.cc:343: 
Failure
   Expected equality of these values:
     expected_column_data.values[i]
       Which is: 19.8
     read_col_data.values[i]
       Which is: 19.8
   values at index 18 not equal read is 19.800001, expect 19.799999
   D:/a/arrow/arrow/cpp/src/parquet/encryption/test_encryption_util.cc:343: 
Failure
   Expected equality of these values:
     expected_column_data.values[i]
       Which is: 25.3
     read_col_data.values[i]
       Which is: 25.3
   values at index 23 not equal read is 25.300001, expect 25.299999
   D:/a/arrow/arrow/cpp/src/parquet/encryption/test_encryption_util.cc:343: 
Failure
   Expected equality of these values:
     expected_column_data.values[i]
       Which is: 26.4
     read_col_data.values[i]
       Which is: 26.4
   values at index 24 not equal read is 26.400002, expect 26.400000
   D:/a/arrow/arrow/cpp/src/parquet/encryption/test_encryption_util.cc:343: 
Failure
   Expected equality of these values:
     expected_column_data.values[i]
       Which is: 30.8
     read_col_data.values[i]
       Which is: 30.8
   values at index 28 not equal read is 30.800001, expect 30.799999
   ```
   
   I guess the problem comes from floating point equality. @felipecrv 


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