[jira] [Created] (ARROW-11378) [C++][Dataset] Writing partitions with timestamp type give mis-formatted (integers) directory names

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

Joris Van den Bossche created ARROW-11378:
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             Summary: [C++][Dataset] Writing partitions with timestamp type give mis-formatted (integers) directory names
                 Key: ARROW-11378
                 URL: https://issues.apache.org/jira/browse/ARROW-11378
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
            Reporter: Joris Van den Bossche
             Fix For: 4.0.0


{code}
In [1]: df = pd.DataFrame({"dates": list(pd.date_range("2012-01-01", periods=2, freq="D")) * 5, "col": range(10)})

In [2]: table = pa.table(df)

In [8]: part = ds.partitioning(table.select(["dates"]).schema, flavor="hive")

In [9]: ds.write_dataset(table, "test_partition_timestamp", format="parquet", partitioning=part)

In [10]: !ls test_partition_timestamp/
'dates=1325376000000000000'  'dates=1325462400000000000'
{code}

Same happens for non-ns timestamp types.

(didn't directly find an existing issue about it)



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