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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/11/01 22:14:21 UTC
[GitHub] [spark] xinrong-meng opened a new pull request, #38473: [SPARK-40990][PYTHON] DataFrame creation from 2d NumPy array with arbitrary columns
xinrong-meng opened a new pull request, #38473:
URL: https://github.com/apache/spark/pull/38473
### What changes were proposed in this pull request?
Support DataFrame creation from 2d NumPy array with arbitrary columns.
### Why are the changes needed?
Currently, DataFrame creation from 2d ndarray works only with 2 columns. We should provide complete support for DataFrame creation with 2d ndarray.
As part of [SPARK-39405](https://issues.apache.org/jira/browse/SPARK-39405).
### Does this PR introduce _any_ user-facing change?
Yes.
Before
```py
>>> spark.createDataFrame(np.array([[1], [2]])).dtypes
Traceback (most recent call last):
...
raise ValueError(f"Shape of passed values is {passed}, indices imply {implied}")
ValueError: Shape of passed values is (2, 1), indices imply (2, 2)
>>> spark.createDataFrame(np.array([[1, 1, 1], [2, 2, 2]])).dtypes
Traceback (most recent call last):
...
raise ValueError(f"Shape of passed values is {passed}, indices imply {implied}")
ValueError: Shape of passed values is (2, 3), indices imply (2, 2)
```
After
```py
>>> spark.createDataFrame(np.array([[1], [2]])).dtypes
[('value', 'bigint')]
>>> spark.createDataFrame(np.array([[1, 1, 1], [2, 2, 2]])).dtypes
[('_1', 'bigint'), ('_2', 'bigint'), ('_3', 'bigint')]
```
### How was this patch tested?
Unit tests.
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[GitHub] [spark] HyukjinKwon commented on pull request #38473: [SPARK-40990][PYTHON] DataFrame creation from 2d NumPy array with arbitrary columns
Posted by GitBox <gi...@apache.org>.
HyukjinKwon commented on PR #38473:
URL: https://github.com/apache/spark/pull/38473#issuecomment-1299413739
Merged to master.
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[GitHub] [spark] HyukjinKwon closed pull request #38473: [SPARK-40990][PYTHON] DataFrame creation from 2d NumPy array with arbitrary columns
Posted by GitBox <gi...@apache.org>.
HyukjinKwon closed pull request #38473: [SPARK-40990][PYTHON] DataFrame creation from 2d NumPy array with arbitrary columns
URL: https://github.com/apache/spark/pull/38473
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