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Posted to jira@arrow.apache.org by "Joris Van den Bossche (Jira)" <ji...@apache.org> on 2021/02/08 17:42:00 UTC
[jira] [Commented] (ARROW-11378) [C++][Dataset] Writing partitions
with timestamp type give mis-formatted (integers) directory names
[ https://issues.apache.org/jira/browse/ARROW-11378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17281254#comment-17281254 ]
Joris Van den Bossche commented on ARROW-11378:
-----------------------------------------------
cc [~westonpace]
> [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
> Priority: Major
> Labels: dataset
> 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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