[jira] [Created] (ARROW-15871) [Python] Start raising deprecation warnings for ParquetDataset keywords that won't be supported with the new API

[Joris Van den Bossche (Jira)]

Joris Van den Bossche created ARROW-15871:
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             Summary: [Python] Start raising deprecation warnings for 
ParquetDataset keywords that won't be supported with the new API
                 Key: ARROW-15871
                 URL: https://issues.apache.org/jira/browse/ARROW-15871
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
            Reporter: Joris Van den Bossche
             Fix For: 8.0.0


Currently, the {{ParquetDataset}} API itself still defaults to the legacy 
implementation ({{parquet.read_table}} already defaults to the new) and also 
still supports some keywords that won't be supported with the new 
implementation. 

So if we want to remove the old implementation at some point (ARROW-15868), we 
should start deprecating those options, and also start defaulting to the new 
implementation when possible.



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