[GitHub] [arrow] artsiom-tsaryonau opened a new issue, #34533: [Python] Rescaling Decimal128 value would cause data loss

["artsiom-tsaryonau (via GitHub)" <gi...@apache.org>]

artsiom-tsaryonau opened a new issue, #34533:
URL: https://github.com/apache/arrow/issues/34533

   ### Describe the usage question you have. Please include as many useful details as  possible.
   
   
   I have a dataframe that I want to convert to parquet file with pyarrow schema
   
   The piece of code that does that looks like this
   ```
   df = DataFrame({
       "BOOKG_AMT_XCHG_RATE_NMRC": [79812042284098215031627424085742912847.808901592419987254]
   })
   df[['BOOKG_AMT_XCHG_RATE_NMRC']] = df[['BOOKG_AMT_XCHG_RATE_NMRC']].applymap(str).applymap(Decimal)
   df.to_parquet(parquet_file, schema=pa.schema([('BOOKG_AMT_XCHG_RATE_NMRC', pa.decimal128(38, 18))]))
   ```
   
   And when run it triggers _Rescaling Decimal128 value would cause data loss_ error.
   
   What might be the problem? 
   
   ### Component(s)
   
   Parquet, Python


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[GitHub] [arrow] artsiom-tsaryonau closed issue #34533: [Python] Rescaling Decimal128 value would cause data loss

["artsiom-tsaryonau (via GitHub)" <gi...@apache.org>]

artsiom-tsaryonau closed issue #34533: [Python] Rescaling Decimal128 value would cause data loss
URL: https://github.com/apache/arrow/issues/34533


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