[jira] [Created] (ARROW-13074) [Python] Start with deprecating ParquetDataset custom attributes

["Joris Van den Bossche (Jira)" <ji...@apache.org>]

Joris Van den Bossche created ARROW-13074:
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             Summary: [Python] Start with deprecating ParquetDataset custom attributes
                 Key: ARROW-13074
                 URL: https://issues.apache.org/jira/browse/ARROW-13074
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
            Reporter: Joris Van den Bossche
            Assignee: Joris Van den Bossche
             Fix For: 5.0.0


As a first step for ARROW-9720, we should start with deprecating attributes/methods of {{pq.ParquetDataset}} that we would definitely not keep / are conflicting with the "dataset API". 

I am thinking of the {{pieces}} attribute (and the {{ParquetDatasetPiece}} class), the {{partitions}} attribute (and the {{ParquetPartitions}} class). 

In addition, some of the keywords are also exposed as properties (memory_map, read_dictionary, buffer_size, fs).



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